WO2023226528A1 - Frequency selective surface for antenna, and antenna system - Google Patents

Frequency selective surface for antenna, and antenna system Download PDF

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Publication number
WO2023226528A1
WO2023226528A1 PCT/CN2023/080996 CN2023080996W WO2023226528A1 WO 2023226528 A1 WO2023226528 A1 WO 2023226528A1 CN 2023080996 W CN2023080996 W CN 2023080996W WO 2023226528 A1 WO2023226528 A1 WO 2023226528A1
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WO
WIPO (PCT)
Prior art keywords
antenna
frequency selection
conductive pattern
frequency
phase shift
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Application number
PCT/CN2023/080996
Other languages
French (fr)
Chinese (zh)
Inventor
张茜茜
孙静
Original Assignee
普罗斯通信技术（苏州）有限公司
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Publication of WO2023226528A1 publication Critical patent/WO2023226528A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
    • H01Q15/002—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective said selective devices being reconfigurable or tunable, e.g. using switches or diodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
    • H01Q15/0026—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective said selective devices having a stacked geometry or having multiple layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array

Definitions

  • the present disclosure relates to the field of communications, and more specifically to a frequency selective surface for an antenna and an antenna system having the frequency selective surface.
  • 5G sites are mainly implemented by adding 5G antennas and equipment to original 4G site resources, so multi-frequency base station antennas have become mainstream.
  • the active and passive integrated base station antennas integrating 4G and 5G have more advantages in space size, wind load, and management. They are widely accepted and used in the 5G base station deployment process and are an important factor in the future evolution of base station antennas. direction. At this point, frequency selective surfaces become an important choice.
  • Traditional frequency selective surfaces can reflect electromagnetic waves in a certain frequency band and transmit electromagnetic waves in another frequency band. In this way, radiating units of different frequency bands can be distributed on the same side of the reflector or on both sides of the reflector, which improves the flexibility of antenna deployment and saves base station resources.
  • the electromagnetic waves radiated by the radiating unit in a certain working frequency band will not only be affected by the radiating units in other working frequency bands, but also by the components of each part of the antenna. effects, and frequency selective surfaces generally do not allow adjustment of the wavefront or beamwidth or direction.
  • a frequency selective surface for an antenna the frequency selective surface includes:
  • a first group of frequency selection units each first frequency selection unit in the first group of frequency selection units
  • the selection unit includes a first conductive pattern
  • a second group of frequency selection units each second frequency selection unit in the second group of frequency selection units includes a second conductive pattern, wherein the first conductive pattern and the second conductive pattern are different.
  • the frequency selective surface for antenna since the first conductive pattern and the second conductive pattern are different, it is possible to achieve optimal adjustment of the outgoing wave by means of the frequency selective surface for antenna. Effect.
  • the shape of the first conductive pattern is associated with a first phase shift
  • the shape of the second conductive pattern is associated with a second phase shift
  • the first phase shift is different from the second phase shift.
  • the first group of frequency selection units is disposed in the middle of the frequency selection surface and the second group of frequency selection units is disposed on the first group of frequency selection surfaces. Both sides of the unit, and wherein the first phase shift is smaller than the second phase shift or the first phase shift is larger than the second phase shift.
  • the first group of frequency selection units is located in one row or column, and the second group of frequency selection units is located in another row or column. In this way, the directivity of the outgoing wave can be further optimized.
  • the frequency selection surface further includes a third group of frequency selection units, and each third frequency selection unit in the third group of frequency selection units includes a third A conductive pattern, wherein the third conductive pattern is different from both the first conductive pattern and the second conductive pattern.
  • the first conductive pattern, the second conductive pattern and the third conductive pattern are all different, the first phase shift formed by the first conductive pattern, the first phase shift formed by the second conductive pattern
  • the second phase shift formed by the conductive pattern and the third phase shift formed by the third conductive pattern are different, so that different phase shifts can be introduced into the electromagnetic waves passing through the corresponding conductive pattern, thereby achieving the purpose of using
  • the frequency selection surface of the antenna achieves the effect of optimal adjustment of the outgoing wave.
  • the third conductive pattern A shape is associated with a third phase shift, and wherein the third phase shift is different from both the first phase shift and the second phase shift.
  • the third conductive pattern is different from the first conductive pattern and the second conductive pattern, the first phase shift formed by the first conductive pattern is caused by the first phase shift.
  • the second phase shift formed by the two conductive patterns and the third phase shift formed by the third conductive pattern are both different, so that different phase shifts can be introduced into the electromagnetic waves passing through the corresponding conductive patterns, thereby achieving the goal of using
  • the frequency selection surface of the antenna achieves the effect of optimal adjustment of the outgoing wave.
  • the frequency selection surface further includes a parasitic unit, and the parasitic unit is disposed at an edge of the frequency selection surface.
  • the parasitic unit is used to optimize the pattern of the radiation unit that is deteriorated by the side column environment, thereby effectively improving the radiation pattern of the multi-frequency base station antenna.
  • the parasitic unit is configured as a square metal sheet.
  • the frequency selective surface further includes a metal layer, the metal layer is provided with a plurality of hollow areas, and wherein the first conductive pattern and the second conductive pattern are respectively Set in the hollow area. More preferably, in an embodiment according to the present disclosure, the distance between the first conductive pattern and the ground layer is a first pitch and the distance between the second conductive pattern and the metal layer is a first pitch. Two spacings, and wherein the first spacing and the second spacing are not equal.
  • the first conductive pattern or the second conductive pattern includes at least two metal patches, and wherein there is a metal patch between the at least two metal patches. gap.
  • one of the at least two metal patches is provided with a groove and the other is provided with a protrusion, the protrusion is at least partially located in the groove Inside. More preferably, in an embodiment according to the present disclosure, the number of the metal patches is 4, and the shape of each metal patch is the same.
  • the number of the second group of frequency selection units is twice the number of the first group of frequency selection units, and wherein, the The first group of frequency selection units is located between a pair of said second group of frequency selection units.
  • a second aspect of the present disclosure provides an antenna system, the antenna system includes: a first antenna, a second antenna, and a frequency selective surface proposed according to the first aspect of the present disclosure, wherein, The first antenna and the second antenna are respectively disposed on both sides of the frequency selection surface.
  • the first antenna and the second antenna are respectively constructed as independent structures.
  • the antenna system further includes a radome of a first antenna and a radome of a second antenna, and the radome of the first antenna and the second antenna The radomes are respectively configured to protect the first antenna and the second antenna, wherein the radome of the first antenna and the radome of the second antenna include mounting and fixing structures that are adapted to each other.
  • the frequency selective surface is provided in a radome of the first antenna or a radome of the second antenna.
  • the first antenna is configured as a 5G antenna
  • the second antenna is configured as a non-5G antenna.
  • the antenna system further includes a bracket configured to support the frequency selective surface, and wherein, for providing the first antenna or the second The feed cable feeding the antenna is routed along the bracket. Further preferably, in an embodiment according to the present disclosure, the feed cable used to feed the first antenna or the second antenna is routed along the ground grid line of the frequency selection surface. .
  • the first conductive pattern and the second conductive pattern are different, different phase shifts can be introduced into the electromagnetic waves passing through the corresponding conductive patterns, thereby achieving The effect of optimal adjustment of the outgoing waves is achieved by means of frequency selection surfaces for the antenna.
  • Figure 1 shows a schematic diagram of a frequency selective surface for an antenna in accordance with the present disclosure
  • FIG. 2 shows a schematic structural diagram of a frequency selective surface 200 for an antenna according to the present disclosure
  • 3A shows a schematic structural diagram of a frequency selective surface 300A for an antenna according to one embodiment of the present disclosure
  • Figure 3B illustrates frequency selection for an antenna in accordance with another embodiment of the present disclosure.
  • 3C shows a schematic structural diagram of a frequency selective surface 300C for an antenna according to yet another embodiment of the present disclosure
  • Figure 3D shows a schematic structural diagram of a frequency selective surface 300D for an antenna according to yet another embodiment of the present disclosure
  • FIG. 4 shows a schematic structural diagram of a frequency selective surface 400 for an antenna according to another embodiment of the present disclosure
  • FIG. 5A shows an assembly diagram of an active and passive integrated antenna system 500 according to an embodiment of the present disclosure
  • Figure 5B shows an exploded schematic diagram of the antenna system 500 shown in Figure 5A.
  • FIG. 5C shows a schematic wiring diagram of the feed cable 41 of the radiating unit 4 in FIG. 5B .
  • the wavefront of the incident wave in the traditional antenna generally cannot be adjusted through the frequency selection surface, which makes the radiation pattern of the antenna less than ideal.
  • the inventor of the present disclosure innovatively thought of changing the frequency
  • the structure of the surface, that is, the conductive pattern is selected to achieve optimal adjustment of the outgoing wave.
  • the present disclosure provides a new type of frequency selection surface (Frequency Selection Surface: FSS).
  • FSS Frequency Selection Surface
  • the panel containing the frequency selection surface has the function of selecting the frequency of the traditional frequency selection surface, that is, in the working frequency band of a certain radiating unit.
  • the passband which has almost no impact on the radiation performance of the radiating unit, and is nearly equivalent to a layer of air; while within the working frequency band of the other radiating unit is the stopband, and the reflectivity of the radiation signal of the radiating unit is close to 100 %, nearly equivalent to a continuous metal surface.
  • the frequency selective surface according to the present disclosure also has the function of regulating the emitted wave. This function is mainly realized by modifying the conductive patterns of specific units of part of the frequency selective surface, so that the specific units of the modified frequency selective surface are introduced. Different phase shifts achieve the effect of regulating the outgoing wave.
  • the side column environment of multi-frequency base station antennas is usually complex, including supports, cables, metal support frames, etc.
  • the side column pattern is seriously deteriorated.
  • the inventors based on the present disclosure also creatively thought of additionally adding a column of parasitic units on both sides of the frequency selection surface based on the present disclosure to optimize the pattern of the radiation unit that is deteriorated by the side column environment. , thereby effectively improving the radiation pattern of the multi-frequency base station antenna.
  • the influence of the conductive pattern on the electromagnetic wave pattern will first be introduced before introducing the frequency selective surface for antennas according to the present disclosure.
  • FIG. 1 shows a schematic diagram of a frequency selective surface for an antenna in accordance with the present disclosure.
  • the beam width or beam direction can be adjusted.
  • the conductive patterns 110, 120, and 130 are used to refer to different conductive patterns. Among them, the conductive pattern 110 delays the phase of the signal by 0 degrees, the conductive pattern 120 delays the phase of the signal by ⁇ , and the conductive pattern 130 delays the phase of the signal by 2 ⁇ .
  • the beam width or beam direction of the outgoing wave is regulated.
  • the inventor of the present disclosure can transform the conductive patterns of each unit in the traditional frequency selective surface, so that the conductive patterns of each unit of the frequency selective surface at different positions can introduce desired Phase shift to achieve beam control.
  • the phase shift is the phase of the signal on the propagation path after passing through the frequency selection surface and the The difference in phase before the frequency selection surface.
  • the phase shift is less than zero, it indicates phase delay; when the phase shift is greater than zero, it indicates phase advance.
  • the working principle of this frequency selective surface is shown in Figure 1 above.
  • Each unit of each frequency selective surface in the figure has a different structure, that is, a different conductive pattern.
  • Such different structures also produce different phase shifts for incident waves, so the transmission
  • the beam of the outgoing wave passing through the frequency selective surface is shifted relative to the incident wave.
  • the actual incident wave is not necessarily an ideal plane wave, but by adjusting the conductive pattern of each unit of each frequency-selective surface, each unit of the frequency-selective surface produces different phase shifts, and the effect of controlling the beam width and direction can still be achieved.
  • the frequency selection function of the frequency selection surface does not disappear. That is, it is equivalent to a metal plate for a certain frequency band, reflecting all its signals; at the same time, it is equivalent to a transparent plate for another frequency band, that is, it does not have any impact on the signal of the other frequency band.
  • this disclosure proposes a frequency selective surface with the function of regulating the antenna pattern, the structure of which is shown in Figure 2.
  • the panel not only has the characteristics of frequency selection, but also can achieve the function of beam forming based on the compensation of the electromagnetic wave transmission phase. Since when the spherical wavefront radiated by the radiating element reaches the frequency selection surface, the path difference between the phase center and each frequency selection surface unit results in a corresponding phase difference. In order to convert the spherical wavefront into the desired wavefront, it is necessary to Frequency selective surface elements compensate for phase differences between different paths.
  • the present disclosure achieves phase compensation by changing the size or structure of each unit of the frequency selection surface so that the phase shifts of the electromagnetic waves passing through the frequency selection surface at different positions are different.
  • Figure 2 shows three different conductive patterns of frequency selective surfaces used in the panel of the present disclosure, so that the frequency selective surfaces form a gradient structure.
  • the transmission phase of the conductive pattern 220 on the frequency selective surface lags behind the conductive pattern 210 on the frequency selective surface by about 10 degrees
  • the transmission phase of the conductive pattern 230 on the frequency selective surface lags behind the conductive pattern 220 on the frequency selective surface by about 10 degrees. Therefore, different frequency-selective surface elements direct electromagnetic energy into the desired radiation direction, thereby broadening the lobe width of the antenna pattern.
  • FIG. 2 shows a schematic structural diagram of a frequency selective surface 200 for an antenna according to the present disclosure.
  • FIG. 2 shows a schematic diagram of a frequency selection surface 200 according to one possible implementation form of the inventive concept of the present disclosure.
  • the frequency selective surface includes a dielectric layer (such as the white area and the lower part of the black area in FIG. 2 ) and a metal layer (such as the black frame part in FIG. 2 ).
  • This metal region can be grounded, for example, forming a ground plane.
  • the metal layer is provided with a hollow area. In the example shown in FIG.
  • the metal layer includes three conductive patterns, from left to right, the conductive pattern 210 , the conductive pattern 220 and the conductive pattern 230 , where the three conductive patterns 210 , 220 and 230 are The conductive pattern 230 is disposed in the hollow area.
  • the distance between the conductive pattern 210 and the ground layer is the first pitch and the distance between the conductive pattern 220 and the ground layer (the black box part) is the second pitch.
  • the distance between the top edge of the conductive pattern 210 and the black frame part is the first distance
  • the distance between the top edge of the conductive pattern 220 and the black frame part is the second distance.
  • the first distance is obviously The second spacing is not equal, and the first spacing is larger than the second spacing.
  • the three conductive patterns here are only exemplary and not limiting.
  • the main inventive concept according to the present disclosure is that different conductive patterns will introduce different phase shifts to the processed signals. Therefore, the frequency selective surface according to the present disclosure should have at least two different conductive patterns. How many types of conductive patterns should be included?
  • the conductive patterns can be designed according to specific requirements, and as long as the frequency selective surface includes at least two different conductive patterns, it will fall within the scope of the claims claimed based on this disclosure.
  • the conductive pattern of the frequency selective surface used in the present disclosure is not a whole piece of metal.
  • the conductive pattern 210 or the conductive pattern 220 includes at least two metal patches, including four metal patches in the example shown in FIG. 2 , and each metal patch has the same shape. There is a gap between any two of these metal patches.
  • grooves and/or protrusions are provided in the metal patch, and the protrusions can, for example, be located at least partially within the grooves.
  • the metal patch gradually becomes larger from left to right.
  • the distance between the top edge of the metal patch and the ground layer, that is, the black frame part becomes smaller and smaller, allowing the frequency selection surface to form a gradient structure.
  • the effect of changing the transmission phase can be achieved by changing the size of the spacing here without changing the period size of the frequency selection surface. This can ensure that the frequency selection surface has frequency selection surface units with the same period, making the distribution of the gradient frequency selection surface units more precise. For simplicity and flexibility.
  • the conductive patterns of different frequency-selective surfaces used in the present disclosure are not limited to three, and may be multiple different conductive patterns of frequency-selective surfaces.
  • the conductive pattern mainly consists of metal patches and gaps between different metal patches.
  • the metal patch distribution can include multiple metal patches, and there can be gaps between multiple metal patches.
  • a hollow portion formed by the above-mentioned first spacing or the second spacing can also be formed between the metal sheet and the frame.
  • the first group of frequency selection units is disposed in the middle of the frequency selection surface and the second group of frequency selection units is disposed in the first group of frequencies. Both sides of the cell are selected, and wherein the first phase shift is smaller than the second phase shift or the first phase shift is larger than the second phase shift.
  • the phase shift of the conductive pattern on the frequency selective surface can be larger from the center to both sides, or can be smaller from the center to both sides. Therefore, it is possible to design a frequency selective surface that broadens the beam width, a frequency selective surface that compresses the beam width, or even a frequency selective surface that changes the beam direction to flexibly control the pattern.
  • the distribution of frequency-selective surface units is not limited to distribution according to edge columns, but can be distributed according to different requirements, such as distribution in the middle column, radial distribution from the center, etc.
  • the frequency selective surface can be a single-layer or multi-layer planar structure, and can also be a band-pass frequency selective surface or a high-pass frequency selective surface.
  • FIGS. 3A to 5C show a schematic structural diagram of a frequency selection surface 300A for an antenna according to one embodiment of the present disclosure
  • FIG. 3B shows a frequency selection surface for an antenna according to another embodiment of the present disclosure
  • 300B shows a schematic structural diagram of a frequency selection surface 300C for an antenna according to another embodiment of the present disclosure
  • FIG. 3D shows a schematic structural diagram of a frequency selection surface 300C for an antenna according to another embodiment of the present disclosure.
  • the frequency selective surface 300A for an antenna shown in FIG. 3A only includes two conductive patterns, and each conductive pattern continuously exists in only one column;
  • FIG. The frequency selective surface 300B for an antenna shown in FIG. 3B also only includes two conductive patterns, but each conductive pattern exists in two consecutive columns;
  • the frequency selective surface 300C for an antenna shown in FIG. 3C includes three conductive patterns. pattern, and the middle conductive pattern continuously exists in two columns;
  • the frequency selective surface 300D for an antenna shown in FIG. 3D includes three conductive patterns, and the middle conductive pattern continuously exists in multiple columns.
  • the frequency selective surface 300A for an antenna shown in FIG. 3A includes four rows and three columns of conductive patterns.
  • the frequency selection surface 300A according to the present disclosure includes a first set of frequency selection cells 310A, each of the first set of frequency selection cells 310A including a first conductive pattern 3101A, that is, the middle conductive pattern shown.
  • the frequency selection surface 300A according to the present disclosure also includes a second set of frequency selection units 320A, so Each second frequency selection unit in the second set of frequency selection units 320A includes a second conductive pattern 3201A, that is, the conductive pattern shown on the edge.
  • the first conductive pattern 3101A and the second conductive pattern 3201A are different.
  • the distance between the conductive pattern 3101A and the ground layer, that is, the black frame part is the first pitch
  • the distance between the conductive pattern 3102A and the metal layer is the second pitch.
  • the distance between the top edge of the conductive pattern 3101A and the black frame part is the first distance
  • the distance between the top edge of the conductive pattern 3102A and the black frame part is the second distance.
  • the first distance is obviously The second spacing is not equal, and the first spacing is larger than the second spacing.
  • the black frame of the outer circle of each conductive pattern such as 330A, constitutes a ground layer.
  • the conductive pattern of the frequency selective surface used in the present disclosure is not a whole piece of metal.
  • the conductive pattern 3101A or the conductive pattern 3102A includes at least two metal patches, including four metal patches in the example shown in FIG. 3A , and the shape of each metal patch is the same. There is a gap between any two of these metal patches.
  • grooves and/or protrusions are provided in the metal patch, and the protrusions can, for example, be located at least partially within the grooves.
  • the shape of the first conductive pattern 3101A is associated with a first phase shift
  • the shape of the second conductive pattern 3201A is associated with a second phase shift, wherein the first phase shift is different at the second phase shift.
  • the first conductive pattern 3101A and the second conductive pattern 3201A are different
  • the first phase shift formed by the first conductive pattern 3101A and the phase shift formed by the second conductive pattern 3201A are The second phase shifts are different so as to introduce different phase shifts to the electromagnetic waves passing through the corresponding conductive patterns 3101A or 3201A, thereby achieving the effect of optimal adjustment of the outgoing waves by means of the frequency selection surface 300A for the antenna.
  • the first group of frequency selection units 310A is arranged in one column, and this column includes four first conductive patterns 3101A
  • the second group of frequency selection units 320A is arranged in two columns, and each column includes four second conductive patterns 3201A.
  • the number of columns of frequency selection units provided and the number of conductive patterns included in each column of frequency selection units can be changed, and can be designed according to specific design requirements.
  • the frequency selective surface 300B for an antenna shown in FIG. 3B includes a conductive pattern of four rows and six columns. case.
  • the frequency selection surface 300B according to the present disclosure includes a first set of frequency selection cells 310B, each of the first set of frequency selection cells 310B including a first conductive pattern 3101B, that is, the middle conductive pattern shown.
  • the frequency selection surface 300B according to the present disclosure further includes a second group of frequency selection units 320B, each of the second group of frequency selection units 320B including a second conductive pattern 3201B, as shown in the edge. conductive pattern.
  • the first conductive pattern 3101B and the second conductive pattern 3201B are different.
  • the frequency selection surface 300B for an antenna since the first conductive pattern 3101B and the second conductive pattern 3201B are different, it is possible to achieve the output control by means of the frequency selection surface 300B for the antenna.
  • the effect of wave optimization adjustment since the first conductive pattern 3101B and the second conductive pattern 3201B are different, it is possible to achieve the output control by means of the frequency selection surface 300B for the antenna. The effect of wave optimization adjustment.
  • the shape of the first conductive pattern 3101B is associated with a first phase shift
  • the shape of the second conductive pattern 3201B is associated with a second phase shift, wherein the first phase shift is different at the second phase shift.
  • the first conductive pattern 3101B and the second conductive pattern 3201B are different, the first phase shift formed by the first conductive pattern 3101B and the phase shift formed by the second conductive pattern 3201B are The second phase shifts are different so as to introduce different phase shifts to the electromagnetic waves passing through the corresponding conductive patterns 3101B or 3201B, thereby achieving the effect of optimal adjustment of the outgoing waves by means of the frequency selection surface 300B for the antenna.
  • the first group of frequency selection units 310B is arranged in two columns, each column including four first conductive patterns 3101B, and the second group of frequency selection units 320B is arranged in four columns, each column including four second conductive patterns 3201B.
  • the number of columns of frequency selection units provided and the number of conductive patterns included in each column of frequency selection units can be changed, and can be designed according to specific design requirements.
  • the frequency selective surface 300C for an antenna shown in FIG. 3C includes four rows and eight columns of conductive patterns.
  • the frequency selection surface 300C according to the present disclosure includes a first set of frequency selection cells 310C, each of the first set of frequency selection cells 310C including a first conductive pattern 3101C, that is, the middle conductive pattern shown.
  • the frequency selection surface 300C according to the present disclosure further includes a second group of frequency selection cells 320C, each of the second group of frequency selection cells 320C including a second conductive pattern 3201C, ie, a second column , the conductive patterns shown in the third, sixth and seventh columns.
  • the frequency selection surface 300C according to the present disclosure further includes a third group of frequency selection units 330C, each of the third group of frequency selection units 330C including a third conductive pattern 3301C, That is the conductive pattern shown on the edge.
  • the third conductive pattern 3301C is different from the first conductive pattern 3101C and the second conductive pattern 3201C.
  • the frequency selective surface 300C for an antenna since the first conductive pattern 3101C, the second conductive pattern 3201C and the third conductive pattern 3301C are all different, such that The first phase shift formed by the first conductive pattern 3101C, the second phase shift formed by the second conductive pattern 3201C, and the third phase shift formed by the third conductive pattern 3301C are different.
  • the effect of optimal adjustment of the outgoing waves is achieved by means of the frequency selection surface 300C for the antenna.
  • the first conductive pattern 3101C, the second conductive pattern 3201C and the third conductive pattern 3201C are all different, it is possible to This achieves the effect of optimal adjustment of the outgoing wave by means of the frequency selection surface 300C for the antenna.
  • the first group of frequency selection units 310C is arranged in two columns, each column including four first conductive patterns 3101C
  • the second group of frequency selection units 320C is arranged in four columns
  • the third group of frequency selection units 330C is arranged in two columns. columns, each column including four third conductive patterns 3301C.
  • the number of columns of frequency selection units provided and the number of conductive patterns included in each column of frequency selection units can be changed, and can be designed according to specific design requirements.
  • the frequency selective surface 300D for an antenna shown in FIG. 3D includes four rows and sixteen columns of conductive patterns.
  • the frequency selection surface 300D according to the present disclosure includes a first set of frequency selection cells 310D, each of the first set of frequency selection cells 310D including a first conductive pattern 3101D, that is, the middle conductive pattern shown.
  • the frequency selection surface 300D according to the present disclosure further includes a second group of frequency selection cells 320D, each of the second group of frequency selection cells 320D including a second conductive pattern 3201D, that is, a second column , the third column, and the conductive patterns shown in the penultimate and third columns.
  • the frequency selection surface 300D also includes a third group of frequency selection units 330D, and each third frequency selection unit in the third group of frequency selection units 330D includes a third conductive pattern 3301D, that is, a first columns and the conductive pattern shown in the penultimate column. As can be seen from FIG. 3D , the third conductive pattern 3301D is different from the first conductive pattern 3101D and the second conductive pattern 3201D.
  • the frequency selective surface 300D for an antenna since the first conductive pattern 3101D, the second conductive pattern 3201D and the third conductive pattern 3301D are different, so that the first phase shift formed by the first conductive pattern 3101D, the second phase shift formed by the second conductive pattern 3201D and the third phase shift are different from each other.
  • the third phase shift formed by the conductive pattern 3301D is different, so as to introduce different phase shifts to the electromagnetic waves passing through the corresponding conductive patterns 3101D, 3201D and 3301D, thereby achieving the purpose of controlling the outgoing wave by means of the frequency selective surface 300D for the antenna. The effect of optimization adjustment.
  • the first conductive pattern 3101D, the second conductive pattern 3201D and the third conductive pattern 3201D are all different, it is possible to This achieves the effect of optimal adjustment of the outgoing wave by means of the frequency selection surface 300D for the antenna.
  • the first group of frequency selection units 310D is set to ten columns, each column including four first conductive patterns 3101D
  • the second group of frequency selection units 320D is set to four columns
  • the third group of frequency selection units 330D is set to two columns, each column including four third conductive patterns 3301D.
  • the number of columns of frequency selection units provided and the number of conductive patterns included in each column of frequency selection units can be changed, and can be designed according to specific design requirements.
  • the conductive pattern of the frequency selective surface used in the present disclosure can change the transmission phase while ensuring that the period of the frequency selective surface remains unchanged, so that different
  • the size of the frequency selection surface makes the layout of each unit more convenient and flexible.
  • the frequency selection surface with the pattern control function of the present disclosure can be directed toward the edge of the frequency selection surface so that the phase shift of each unit of the frequency selection surface remains unchanged or gradually becomes smaller, so as to broaden the beam width of the antenna; or it can The phase shift of each unit of the frequency selection surface is made constant or gradually larger toward the edge of the frequency selection surface, so as to compress the beam width of the antenna.
  • each unit of the frequency selection surface that generates different phase shifts can be distributed in part of the frequency selection surface, that is, the shape only changes along one direction; it can also be distributed in On the overall frequency selection surface, that is, the shape only changes along one direction; it can also be distributed in a central radial shape on part or the entire frequency selection surface.
  • a frequency selection surface 400 in accordance with the present disclosure includes a first set of frequency selection units 410 in which each first frequency The rate selection unit includes a first conductive pattern 4101, the conductive pattern shown in the middle.
  • the frequency selection surface 400 according to the present disclosure further includes a second group of frequency selection cells 420, each of the second group of frequency selection cells 420 including a second conductive pattern 4201, ie, a third column , the fourth column, and the conductive patterns shown in the third and fourth columns from the bottom.
  • the frequency selection surface 400 further includes a third group of frequency selection units 430, each of the third group of frequency selection units 430 includes a third conductive pattern 4301, that is, a second column and the conductive pattern shown in the penultimate column.
  • the frequency selection surface 400 shown in FIG. 4 also includes a parasitic unit 440, which is disposed at the edge of the frequency selection surface 440.
  • the parasitic unit 440 includes a pattern 4401. The parasitic unit 440 is used to optimize the pattern of the radiation unit that is deteriorated by the side column environment, thereby effectively improving the radiation pattern of the multi-frequency base station antenna.
  • the parasitic unit 440 is configured as a square metal sheet.
  • the parasitic unit 440 of the present disclosure is shown as a square in Figure 4, but is not limited to a square. Moreover, the number and location of the parasitic units 440 in this disclosure are not limited and can be adjusted according to actual needs. In addition, the parasitic unit 440 of the present disclosure can be added on both sides of the frequency selection surface with the function of regulating the pattern, or on both sides of the traditional periodic non-gradient frequency selection surface. Furthermore, the parasitic unit 440 of the present disclosure can be used to widen the pattern of the side row radiating units, or can be used to narrow the direction pattern of the side row radiating units.
  • the present disclosure adds parasitic units on both sides of the frequency selection surface with the function of regulating the antenna pattern, as shown in FIG. 4 .
  • the parasitic units work in the operating frequency band of the radiation units that need to broaden the pattern. Their number and relative position are related to the location and number of the radiation units that need to broaden the pattern. Their shape can be square but is not limited to square.
  • the parasitic units on both sides of the frequency selection surface with the function of controlling the pattern can further broaden the pattern of the side row radiating units.
  • the parasitic elements can also be added on both sides of the traditional periodic non-gradient frequency selection surface to broaden or narrow the pattern of the side row radiating elements.
  • the third conductive pattern 4301 is different from the first conductive pattern 4101 and the second conductive pattern 4201 .
  • the second conductive pattern 4201 and the third conductive pattern 4301 are different, so that the first phase formed by the first conductive pattern 4101 shifts, and the second phase formed by the second conductive pattern 4201
  • the shift and the third phase shift formed by the third conductive pattern 4301 are different, so that different phase shifts can be introduced for the electromagnetic waves passing through the corresponding conductive patterns 4101, 4201 and 4301, thereby achieving the frequency used for the antenna.
  • the surface 400 is selected to achieve the effect of optimal adjustment of the outgoing wave.
  • the first conductive pattern 4101, the second conductive pattern 4201 and the third conductive pattern 4301 are all different, it is possible to This achieves the effect of optimal adjustment of the outgoing wave by means of the frequency selection surface 400 for the antenna.
  • the first group of frequency selection units 410 is arranged in ten columns, each column including four first conductive patterns 4101
  • the second group of frequency selection units 420 is arranged in four columns
  • the third group of frequency selection units 430 is arranged in two columns, each column including four third conductive patterns 4301.
  • the number of columns of frequency selection units provided and the number of conductive patterns included in each column of frequency selection units can be changed, and can be designed according to specific design requirements.
  • FIG. 5A shows an assembly diagram of an active and passive integrated antenna system 500 according to one embodiment of the present disclosure.
  • the antenna system proposed according to the present disclosure shown in FIG. 5A includes a first antenna, a second antenna, and a frequency selection surface described according to the above aspects of the present disclosure, wherein the first antenna and the third antenna Two antennas are respectively arranged on both sides of the frequency selection surface. Since FIG. 5A is an assembly view, the frequency selective surface proposed in accordance with the present disclosure is not visible. However, the mounting bracket 13 of the first antenna, the radome top 1 of the second antenna, and the radome bottom 7 of the second antenna can be seen.
  • FIG. 5B shows an exploded schematic diagram of the antenna system 500 shown in FIG. 5A.
  • the antenna system 500 shown in this embodiment includes a first antenna 9 and a second antenna 4.
  • the first antenna 9 and the second antenna 4 are antennas operating in different operating frequency bands.
  • the first antenna 9 is a 5G antenna
  • the second antenna 4 is a 2G, 3G or 4G antenna.
  • the antenna system 500 in this embodiment also includes a second antenna radome top 1 , a second antenna radome support 2 , a second antenna support 3 , a frequency selection surface 5 , and a metal frame support 6 , the radome bottom 7 of the second antenna, the radome 8 of the first antenna, the first reflection plate 10 , the fixing member 11 , and the first radio frequency remote unit RRU 12 .
  • the first reflection plate 10 is fixed above the first radio frequency remote unit RRU 12 through the fixing member 11.
  • the first antenna 9 is arranged above the first reflection plate 10.
  • the radome 8 of the first antenna is fixed on the first radio frequency remote unit RRU 12 through screws. Above the remote unit RRU 12, cover the first antenna 9 and the first reflector 10 below it.
  • the above unit can be used as an A antenna module.
  • the frequency selection surface 5 is fixed above the radome bottom 7 of the second antenna through a metal frame support 6.
  • the second antenna 4 includes a second antenna radiator, a second antenna feed balun, a second antenna substrate and a second antenna feed. Electrical cable 41, the upper end of the second antenna feed balun is electrically connected to the second antenna radiator, the lower end of the second antenna feed balun is electrically connected to the second antenna substrate, and is connected by the second antenna feed cable Feeding, the second antenna feed cable is fixed above the metal frame support 6.
  • the frequency selection surface 5 forms an open circuit for the first antenna 9 and a ground structure for the second antenna 4 .
  • the above unit can be used as a P antenna module.
  • an existing base station is provided with a P antenna module.
  • the A antenna module and the P antenna module can be fixed together through the mounting bracket 13 to work together.
  • the communication frequency band of the base station can be increased and the communication effect of the base station can be improved without large-scale modification and expansion of the existing base station.
  • the A antenna module and the P antenna module can work independently, which improves the modularity of the antenna, improves the flexibility of using the base station antenna, and saves the construction cost of the base station antenna.
  • the second antenna feed cable 41 can be routed along the ground grid lines of the frequency selection surface 5 .
  • FIG. 5C shows a schematic connection diagram of the feed cable of the radiating unit in FIG. 5B.
  • the second antenna feed cable 41 can be welded to the ground grid line of the frequency selection surface 5 , thereby basically eliminating the interference of the lateral routing of the second antenna feed cable 41 on the radiation pattern of the first antenna 9 Influence.
  • the second antenna feed cable 41 can be routed away from the first antenna 9 and above the metal frame support 6 .
  • the second antenna feed cable 41 can be hidden inside the metal frame support 6, thereby basically eliminating the impact of the vertical routing of the second antenna feed cable 41 on the radiation pattern of the first antenna 9, such as As shown in Figure 5C. That is to say, the present disclosure welds the lateral wiring of the second antenna feed cable to the ground grid line of the frequency selection surface, thereby basically eliminating the radiation of the first antenna by the lateral wiring of the second antenna feed cable Directional influence. The present disclosure hides the vertical wiring of the second antenna feed cable inside the metal frame support, thereby basically eliminating the impact of the vertical wiring of the second antenna feed cable on the radiation pattern of the first antenna.
  • the present disclosure adds the function of regulating the pattern on the basis of the traditional frequency selection surface to form a frequency selection surface with a gradient structure.
  • the frequency selection surface according to the present disclosure not only has the frequency selection function, but also can effectively improve the frequency selection surface. Radiating element pattern.
  • the patterns on the frequency selection surface can, for example, produce phase delay.
  • the patterns on the frequency selection surface can also be designed to advance the phase, and similar effects can be achieved.

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Abstract

The present disclosure relates to a frequency selective surface for an antenna. The frequency selective surface comprises: a first group of frequency selective units, each first frequency selective unit in the first group of frequency selective units comprises a first conductive pattern; and a second group of frequency selective units, each second frequency selective unit in the second group of frequency selective units comprises a second conductive pattern, the first conductive pattern being different from the second conductive pattern. In addition, the present disclosure also relates to an antenna system having the frequency selective surface. The antenna system comprises a first antenna, a second antenna, and the frequency selective surface. The first antenna and the second antenna are arranged on two sides of the frequency selective surface respectively.

Description

用于天线的频率选择表面以及天线***Frequency selective surfaces for antennas and antenna systems 技术领域Technical field
本公开内容涉及通信领域，更为具体地涉及一种用于天线的频率选择表面以及具有上述的频率选择表面的天线***。The present disclosure relates to the field of communications, and more specifically to a frequency selective surface for an antenna and an antenna system having the frequency selective surface.
背景技术Background technique
近年来，随着移动互联网及物联网等信息通信技术的发展，数据流量呈现持续***性增长。5G基站的数量在快速地增多，站点资源紧张的问题也日益显现。In recent years, with the development of information and communication technologies such as the mobile Internet and the Internet of Things, data traffic has continued to grow explosively. The number of 5G base stations is increasing rapidly, and the problem of tight site resources is becoming increasingly apparent.
为了快速地部署5G通信设备，5G站点主要通过在原有4G站点资源上增加5G天线及设备来实现，因此多频基站天线成为主流。其中，4G和5G融合的有源和无源一体化基站天线在空间尺寸、风载、管理上更有优势，而在5G基站部署过程中被广泛接受和应用，是未来基站天线演进的一个重要方向。此时，频率选择表面成为了一个重要选择。In order to quickly deploy 5G communication equipment, 5G sites are mainly implemented by adding 5G antennas and equipment to original 4G site resources, so multi-frequency base station antennas have become mainstream. Among them, the active and passive integrated base station antennas integrating 4G and 5G have more advantages in space size, wind load, and management. They are widely accepted and used in the 5G base station deployment process and are an important factor in the future evolution of base station antennas. direction. At this point, frequency selective surfaces become an important choice.
传统的频率选择表面可以对某一频段的电磁波进行反射，对另外一个频段的电磁波进行透射。这样不同频段的辐射单元既可以分布在所述反射板的同一侧，也可以分布在所述反射板的两侧，提高了天线在部署上的灵活性，节约了基站资源。Traditional frequency selective surfaces can reflect electromagnetic waves in a certain frequency band and transmit electromagnetic waves in another frequency band. In this way, radiating units of different frequency bands can be distributed on the same side of the reflector or on both sides of the reflector, which improves the flexibility of antenna deployment and saves base station resources.
但是，由于4G和5G融合的多频基站天线的工作环境通常比较复杂，某一工作频段的辐射单元辐射的电磁波不仅会受到其他工作频段的辐射单元的影响，还会受到天线各个部分的组件的影响，而且频率选择表面通常并不能对于波前或者波束宽度或指向进行调节。However, since the working environment of multi-frequency base station antennas integrated with 4G and 5G is usually complex, the electromagnetic waves radiated by the radiating unit in a certain working frequency band will not only be affected by the radiating units in other working frequency bands, but also by the components of each part of the antenna. effects, and frequency selective surfaces generally do not allow adjustment of the wavefront or beamwidth or direction.
发明内容Contents of the invention
为了解决现有技术中所存在的技术问题，即如何调节出射波的波前、波束宽度或者波束指向。In order to solve the technical problems existing in the existing technology, that is, how to adjust the wavefront, beam width or beam direction of the outgoing wave.
为了实现上述技术效果，本公开内容的第一方面提出了一种用于天线的频率选择表面，所述频率选择表面包括：In order to achieve the above technical effects, a first aspect of the present disclosure proposes a frequency selective surface for an antenna, the frequency selective surface includes:
第一组频率选择单元，所述第一组频率选择单元中的每个第一频率选 择单元包括第一导电图案；以及A first group of frequency selection units, each first frequency selection unit in the first group of frequency selection units The selection unit includes a first conductive pattern; and
第二组频率选择单元，所述第二组频率选择单元中的每个第二频率选择单元包括第二导电图案，其中，所述第一导电图案和所述第二导电图案不同。A second group of frequency selection units, each second frequency selection unit in the second group of frequency selection units includes a second conductive pattern, wherein the first conductive pattern and the second conductive pattern are different.
在依据本公开内容的用于天线的频率选择表面中，由于所述第一导电图案和所述第二导电图案不同，从而能够达到借助于用于天线的频率选择表面实现对于出射波的优化调整的效果。In the frequency selective surface for antenna according to the present disclosure, since the first conductive pattern and the second conductive pattern are different, it is possible to achieve optimal adjustment of the outgoing wave by means of the frequency selective surface for antenna. Effect.
优选地，在依据本公开内容的一个实施例之中，所述第一导电图案的形状与第一相移相关联，并且所述第二导电图案的形状与第二相移相关联，其中，所述第一相移不同于所述第二相移。以这样的方式，由于所述第一导电图案和所述第二导电图案不同，从而使得由所述第一导电图案形成的第一相移和由所述第二导电图案形成的所述第二相移不同，以便能够为经过相应的导电图案的电磁波引入不同的相移，进而达到借助于用于天线的频率选择表面实现对于出射波的优化调整的效果。Preferably, in one embodiment according to the present disclosure, the shape of the first conductive pattern is associated with a first phase shift, and the shape of the second conductive pattern is associated with a second phase shift, wherein, The first phase shift is different from the second phase shift. In this manner, since the first conductive pattern and the second conductive pattern are different, the first phase shift formed by the first conductive pattern and the second phase shift formed by the second conductive pattern are The phase shifts are different, so that different phase shifts can be introduced into the electromagnetic waves passing through the corresponding conductive patterns, thereby achieving the effect of optimal adjustment of the outgoing waves by means of the frequency selection surface for the antenna.
优选地，在依据本公开内容的一个实施例之中，所述第一组频率选择单元设置于所述频率选择表面的中间并且所述第二组频率选择单元设置于所述第一组频率选择单元的两侧，并且其中，所述第一相移比所述第二相移小或者所述第一相移比所述第二相移大。Preferably, in one embodiment according to the present disclosure, the first group of frequency selection units is disposed in the middle of the frequency selection surface and the second group of frequency selection units is disposed on the first group of frequency selection surfaces. Both sides of the unit, and wherein the first phase shift is smaller than the second phase shift or the first phase shift is larger than the second phase shift.
优选地，在依据本公开内容的一个实施例之中，所述第一组频率选择单元位于一行或者一列，并且所述第二组频率选择单元位于另外的行或列。以这样的方式能够进一步优化出射波的方向性。Preferably, in one embodiment according to the present disclosure, the first group of frequency selection units is located in one row or column, and the second group of frequency selection units is located in another row or column. In this way, the directivity of the outgoing wave can be further optimized.
进一步优选地，在依据本公开内容的一个实施例之中，所述频率选择表面还包括第三组频率选择单元，所述第三组频率选择单元中的每个第三频率选择单元包括第三导电图案，其中，所述第三导电图案与所述第一导电图案以及所述第二导电图案均不同。以这样的方式，由于所述第一导电图案、所述第二导电图案和所述第三导电图案均不同，从而使得由所述第一导电图案形成的第一相移、由所述第二导电图案形成的所述第二相移以及由所述第三导电图案形成的所述第三相移不同，以便能够为经过相应的导电图案的电磁波引入不同的相移，进而达到借助于用于天线的频率选择表面实现对于出射波的优化调整的效果。Further preferably, in an embodiment according to the present disclosure, the frequency selection surface further includes a third group of frequency selection units, and each third frequency selection unit in the third group of frequency selection units includes a third A conductive pattern, wherein the third conductive pattern is different from both the first conductive pattern and the second conductive pattern. In this manner, since the first conductive pattern, the second conductive pattern and the third conductive pattern are all different, the first phase shift formed by the first conductive pattern, the first phase shift formed by the second conductive pattern The second phase shift formed by the conductive pattern and the third phase shift formed by the third conductive pattern are different, so that different phase shifts can be introduced into the electromagnetic waves passing through the corresponding conductive pattern, thereby achieving the purpose of using The frequency selection surface of the antenna achieves the effect of optimal adjustment of the outgoing wave.
优选地，在依据本公开内容的一个实施例之中，所述第三导电图案的 形状与第三相移相关联，并且其中，所述第三相移与所述第一相移和所述第二相移均不相同。以这样的方式，由于所述第三导电图案与所述第一导电图案以及所述第二导电图案均不相同，从而使得由所述第一导电图案形成的第一相移、由所述第二导电图案形成的第二相移以及由所述第三导电图案形成的所述第三相移均不相同，以便能够为经过相应的导电图案的电磁波引入不同的相移，进而达到借助于用于天线的频率选择表面实现对于出射波的优化调整的效果。Preferably, in one embodiment according to the present disclosure, the third conductive pattern A shape is associated with a third phase shift, and wherein the third phase shift is different from both the first phase shift and the second phase shift. In this way, since the third conductive pattern is different from the first conductive pattern and the second conductive pattern, the first phase shift formed by the first conductive pattern is caused by the first phase shift. The second phase shift formed by the two conductive patterns and the third phase shift formed by the third conductive pattern are both different, so that different phase shifts can be introduced into the electromagnetic waves passing through the corresponding conductive patterns, thereby achieving the goal of using The frequency selection surface of the antenna achieves the effect of optimal adjustment of the outgoing wave.
优选地，在依据本公开内容的一个实施例之中，所述频率选择表面还包括寄生单元，所述寄生单元被设置在所述频率选择表面的边缘。所述寄生单元用于优化因边列环境而恶化的辐射单元的方向图，从而有效地改善多频基站天线的辐射方向图。进一步优选地，在依据本公开内容的一个实施例之中，所述寄生单元被构造为方形金属片。Preferably, in an embodiment according to the present disclosure, the frequency selection surface further includes a parasitic unit, and the parasitic unit is disposed at an edge of the frequency selection surface. The parasitic unit is used to optimize the pattern of the radiation unit that is deteriorated by the side column environment, thereby effectively improving the radiation pattern of the multi-frequency base station antenna. Further preferably, in one embodiment according to the present disclosure, the parasitic unit is configured as a square metal sheet.
优选地，在依据本公开内容的一个实施例之中，所述频率选择表面还包括金属层，所述金属层设置有若干镂空区，并且其中，所述第一导电图案、第二导电图案分别设置于镂空区内。更为优选地，在依据本公开内容的一个实施例之中，所述第一导电图案与接地层之间的距离为第一间距并且所述第二导电图案与金属层之间的距离为第二间距，并且其中，所述第一间距和所述第二间距不相等。Preferably, in one embodiment according to the present disclosure, the frequency selective surface further includes a metal layer, the metal layer is provided with a plurality of hollow areas, and wherein the first conductive pattern and the second conductive pattern are respectively Set in the hollow area. More preferably, in an embodiment according to the present disclosure, the distance between the first conductive pattern and the ground layer is a first pitch and the distance between the second conductive pattern and the metal layer is a first pitch. Two spacings, and wherein the first spacing and the second spacing are not equal.
更为优选地，在依据本公开内容的一个实施例之中，所述第一导电图案或第二导电图案包括至少两个金属贴片，并且其中，所述至少两个金属贴片之间具有间隙。进一步优选地，在依据本公开内容的一个实施例之中，所述至少两个金属贴片中的一个设置有凹槽并且另一个设置有凸起，所述凸起至少部分位于所述凹槽内。更进一步优选地，在依据本公开内容的一个实施例之中，所述金属贴片的数量为4个，且每个金属贴片的形状相同。More preferably, in an embodiment according to the present disclosure, the first conductive pattern or the second conductive pattern includes at least two metal patches, and wherein there is a metal patch between the at least two metal patches. gap. Further preferably, in one embodiment according to the present disclosure, one of the at least two metal patches is provided with a groove and the other is provided with a protrusion, the protrusion is at least partially located in the groove Inside. More preferably, in an embodiment according to the present disclosure, the number of the metal patches is 4, and the shape of each metal patch is the same.
可选地或者替代地，在依据本公开内容的一个实施例之中，所述第二组频率选择单元的数量为是所述第一组频率选择单元的数量的两倍，并且其中，所述第一组频率选择单元位于一对所述第二组频率选择单元之间。Optionally or alternatively, in an embodiment according to the present disclosure, the number of the second group of frequency selection units is twice the number of the first group of frequency selection units, and wherein, the The first group of frequency selection units is located between a pair of said second group of frequency selection units.
此外，本公开内容的第二方面提出了一种天线***，所述天线***包括：第一天线、第二天线、以及根据本公开内容的第一方面所提出的频率选择表面，其中，所述第一天线和所述第二天线分别设置在所述频率选择表面的两侧。 In addition, a second aspect of the present disclosure provides an antenna system, the antenna system includes: a first antenna, a second antenna, and a frequency selective surface proposed according to the first aspect of the present disclosure, wherein, The first antenna and the second antenna are respectively disposed on both sides of the frequency selection surface.
优选地，在依据本公开内容的一个实施例之中，所述第一天线和所述第二天线分别被构造为独立的结构。进一步优选地，在依据本公开内容的一个实施例之中，所述天线***还包括第一天线的天线罩和第二天线的天线罩，所述第一天线的天线罩和所述第二天线的天线罩分别被构造用于保护所述第一天线和所述第二天线，其中，所述第一天线的天线罩和所述第二天线的天线罩包括相互适配的安装固定结构。Preferably, in an embodiment according to the present disclosure, the first antenna and the second antenna are respectively constructed as independent structures. Further preferably, in an embodiment according to the present disclosure, the antenna system further includes a radome of a first antenna and a radome of a second antenna, and the radome of the first antenna and the second antenna The radomes are respectively configured to protect the first antenna and the second antenna, wherein the radome of the first antenna and the radome of the second antenna include mounting and fixing structures that are adapted to each other.
优选地，在依据本公开内容的一个实施例之中，所述频率选择表面被设置在所述第一天线的天线罩或者所述第二天线的天线罩之中。Preferably, in one embodiment according to the present disclosure, the frequency selective surface is provided in a radome of the first antenna or a radome of the second antenna.
优选地，在依据本公开内容的一个实施例之中，所述第一天线被构造为5G天线，并且所述第二天线被构造为非5G天线。Preferably, in one embodiment according to the present disclosure, the first antenna is configured as a 5G antenna, and the second antenna is configured as a non-5G antenna.
优选地，在依据本公开内容的一个实施例之中，所述天线***还包括被构造用于支撑所述频率选择表面的支架，并且其中，用于为所述第一天线或者所述第二天线馈电的馈电电缆沿着所述支架走线。进一步优选地，在依据本公开内容的一个实施例之中，用于为所述第一天线或者所述第二天线馈电的馈电电缆沿着所述频率选择表面的接地网格线走线。Preferably, in one embodiment according to the present disclosure, the antenna system further includes a bracket configured to support the frequency selective surface, and wherein, for providing the first antenna or the second The feed cable feeding the antenna is routed along the bracket. Further preferably, in an embodiment according to the present disclosure, the feed cable used to feed the first antenna or the second antenna is routed along the ground grid line of the frequency selection surface. .
综上所述，在依据本公开内容的技术方案之中，由于所述第一导电图案和所述第二导电图案不同，从而能够为经过相应的导电图案的电磁波引入不同的相移，进而达到借助于用于天线的频率选择表面实现对于出射波的优化调整的效果。To sum up, in the technical solution according to the present disclosure, since the first conductive pattern and the second conductive pattern are different, different phase shifts can be introduced into the electromagnetic waves passing through the corresponding conductive patterns, thereby achieving The effect of optimal adjustment of the outgoing waves is achieved by means of frequency selection surfaces for the antenna.
附图说明Description of the drawings
结合附图并参考以下详细说明，本公开内容的各实施例的特征、优点及其他方面将变得更加明显，在此以示例性而非限制性的方式示出了本公开内容的若干实施例，在附图中：Features, advantages, and other aspects of various embodiments of the present disclosure will become more apparent with reference to the following detailed description, taken in conjunction with the accompanying drawings, several embodiments of which are shown by way of illustration and not limitation. , in the attached picture:
图1示出了依据本公开内容的用于天线的频率选择表面的原理图；Figure 1 shows a schematic diagram of a frequency selective surface for an antenna in accordance with the present disclosure;
图2示出了依据本公开内容的用于天线的频率选择表面200的结构示意图；2 shows a schematic structural diagram of a frequency selective surface 200 for an antenna according to the present disclosure;
图3A示出了依据本公开内容的一个实施例的用于天线的频率选择表面300A的结构示意图；3A shows a schematic structural diagram of a frequency selective surface 300A for an antenna according to one embodiment of the present disclosure;
图3B示出了依据本公开内容的另一个实施例的用于天线的频率选择 表面300B的结构示意图；Figure 3B illustrates frequency selection for an antenna in accordance with another embodiment of the present disclosure. Structural diagram of surface 300B;
图3C示出了依据本公开内容的又一个实施例的用于天线的频率选择表面300C的结构示意图；3C shows a schematic structural diagram of a frequency selective surface 300C for an antenna according to yet another embodiment of the present disclosure;
图3D示出了依据本公开内容的又一个实施例的用于天线的频率选择表面300D的结构示意图；Figure 3D shows a schematic structural diagram of a frequency selective surface 300D for an antenna according to yet another embodiment of the present disclosure;
图4示出了依据本公开内容的另一个实施例的用于天线的频率选择表面400的结构示意图；4 shows a schematic structural diagram of a frequency selective surface 400 for an antenna according to another embodiment of the present disclosure;
图5A示出了依据本公开内容的一个实施例的有源和无源一体化的天线***500的组装示意图；FIG. 5A shows an assembly diagram of an active and passive integrated antenna system 500 according to an embodiment of the present disclosure;
图5B示出了图5A所示出的天线***500的分解示意图；以及Figure 5B shows an exploded schematic diagram of the antenna system 500 shown in Figure 5A; and
图5C示出了图5B中的辐射单元4的馈电电缆41的接线示意图。FIG. 5C shows a schematic wiring diagram of the feed cable 41 of the radiating unit 4 in FIG. 5B .
具体实施方式Detailed ways
以下参考附图详细描述本公开内容的各个示例性实施例。虽然以下所描述的示例性方法、装置包括在其它组件当中的硬件上执行的软件和/或固件，但是应当注意，这些示例仅仅是说明性的，而不应看作是限制性的。例如，考虑在硬件中独占地、在软件中独占地、或在硬件和软件的任何组合中可以实施任何或所有硬件、软件和固件组件。因此，虽然以下已经描述了示例性的方法和装置，但是本领域的技术人员应容易理解，所提供的示例并不用于限制用于实现这些方法和装置的方式。Various exemplary embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. Although the exemplary methods and apparatus described below include software and/or firmware executed on hardware among other components, it should be noted that these examples are only illustrative and should not be viewed as limiting. For example, consider that any or all hardware, software and firmware components may be implemented exclusively in hardware, exclusively in software, or in any combination of hardware and software. Therefore, although exemplary methods and apparatuses have been described below, those skilled in the art will readily understand that the examples provided are not intended to limit the manner in which these methods and apparatuses may be implemented.
此外，附图中的流程图和框图示出了根据本公开内容的各种实施例的方法和***的可能实现的体系架构、功能和操作。应当注意，方框中所标注的功能也可以按照不同于附图中所标注的顺序发生。例如，两个接连地表示的方框实际上可以基本并行地执行，或者它们有时也可以按照相反的顺序执行，这取决于所涉及的功能。同样应当注意的是，流程图和/或框图中的每个方框、以及流程图和/或框图中的方框的组合，可以使用执行规定的功能或操作的专用的基于硬件的***来实现，或者可以使用专用硬件与计算机指令的组合来实现。Furthermore, the flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operations of possible implementations of methods and systems according to various embodiments of the present disclosure. It should be noted that the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown one after the other may actually execute substantially in parallel, or they may sometimes execute in the reverse order, depending on the functionality involved. It should also be noted that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented using special purpose hardware-based systems that perform the specified functions or operations. , or can be implemented using a combination of specialized hardware and computer instructions.
如前所述，现有技术中存在以下技术问题，即传统天线中入射波的波前一般不能通过频率选择表面进行调整，进而使得天线的辐射方向图达不到理想的效果。针对该技术问题，本公开内容的发明人创新地想到改变频 率选择表面的结构，即导电图案，从而实现对于出射波的优化调整。概括地讲，本公开内容提供了一种新型的频率选择表面(Frequency Selection Surface：FSS)，该含有频率选择表面的面板具有传统频率选择表面选择频率的功能，即在某一辐射单元的工作频段内是通带，对该辐射单元的辐射性能几乎没有影响，接近等效为一层空气；而在另外一个辐射单元的工作频段内是阻带，对该辐射单元辐射信号的反射率接近于100％，接近等效为连续金属表面。此外，依据本公开内容的频率选择表面还附带调控出射波的功能，该功能主要通过改造部分的频率选择表面的具体单元的导电图案的方式来实现，使得被改造的频率选择表面的具体单元引入不同的相移，从而达到调控出射波的效果。As mentioned above, there are the following technical problems in the prior art. That is, the wavefront of the incident wave in the traditional antenna generally cannot be adjusted through the frequency selection surface, which makes the radiation pattern of the antenna less than ideal. In response to this technical problem, the inventor of the present disclosure innovatively thought of changing the frequency The structure of the surface, that is, the conductive pattern, is selected to achieve optimal adjustment of the outgoing wave. In summary, the present disclosure provides a new type of frequency selection surface (Frequency Selection Surface: FSS). The panel containing the frequency selection surface has the function of selecting the frequency of the traditional frequency selection surface, that is, in the working frequency band of a certain radiating unit. Within is the passband, which has almost no impact on the radiation performance of the radiating unit, and is nearly equivalent to a layer of air; while within the working frequency band of the other radiating unit is the stopband, and the reflectivity of the radiation signal of the radiating unit is close to 100 %, nearly equivalent to a continuous metal surface. In addition, the frequency selective surface according to the present disclosure also has the function of regulating the emitted wave. This function is mainly realized by modifying the conductive patterns of specific units of part of the frequency selective surface, so that the specific units of the modified frequency selective surface are introduced. Different phase shifts achieve the effect of regulating the outgoing wave.
除此之外，由于多频基站天线的边列环境通常比较复杂，包含支撑件、电缆、金属支撑框架等，使边列方向图恶化比较严重。针对此问题，依据本公开内容的发明人还创新地想到附加地在依据本公开内容的频率选择表面的两边各增加一列寄生单元，以用于优化因边列环境而恶化的辐射单元的方向图，从而有效地改善了多频基站天线的辐射方向图。In addition, since the side column environment of multi-frequency base station antennas is usually complex, including supports, cables, metal support frames, etc., the side column pattern is seriously deteriorated. In response to this problem, the inventors based on the present disclosure also creatively thought of additionally adding a column of parasitic units on both sides of the frequency selection surface based on the present disclosure to optimize the pattern of the radiation unit that is deteriorated by the side column environment. , thereby effectively improving the radiation pattern of the multi-frequency base station antenna.
为了能够更为清楚地介绍依据本公开内容所公开的用于天线的频率选择表面，在介绍依据本公开内容的用于天线的频率选择表面之前，将首先介绍导电图案对于电磁波方向图的影响。In order to more clearly introduce the frequency selective surface for antennas disclosed according to the present disclosure, the influence of the conductive pattern on the electromagnetic wave pattern will first be introduced before introducing the frequency selective surface for antennas according to the present disclosure.
根据天线阵列的工作原理，对各辐射单元馈入不同相位的电流，可以达到控制波束宽度和波束方向的效果。图1示出了依据本公开内容的用于天线的频率选择表面的原理图。如图1所示，辐射单元辐射的信号在经过包括导电图案110、导电图案120和导电图案130的频率选择表面处理后，可以调控波束宽度或者调控波束指向。导电图案110、导电图案120、导电图案130用以指代不同的导电图案。其中，导电图案110使得信号的相位延迟0度，导电图案120使得信号的相位延迟γ，导电图案130使得信号的相位延迟2γ。此时，经过包括这三个不同导电图案110、120和130的频率选择表面的处理之后，出射波的波束宽度或者波束指向得到调控。According to the working principle of the antenna array, feeding currents of different phases to each radiating unit can achieve the effect of controlling the beam width and beam direction. Figure 1 shows a schematic diagram of a frequency selective surface for an antenna in accordance with the present disclosure. As shown in FIG. 1 , after the signal radiated by the radiation unit undergoes frequency selective surface treatment including conductive patterns 110 , 120 , and 130 , the beam width or beam direction can be adjusted. The conductive patterns 110, 120, and 130 are used to refer to different conductive patterns. Among them, the conductive pattern 110 delays the phase of the signal by 0 degrees, the conductive pattern 120 delays the phase of the signal by γ, and the conductive pattern 130 delays the phase of the signal by 2γ. At this time, after processing the frequency selective surface including the three different conductive patterns 110, 120 and 130, the beam width or beam direction of the outgoing wave is regulated.
概括而言，基于上述的这个原理，本公开内容的发明人能够将传统的频率选择表面中的各个单元的导电图案进行改造，使得不同位置的频率选择表面的各个单元的导电图案可以引入期望的相移，从而实现对波束的调控。在此，相移为传播路径上的信号经过频率选择表面后的相位与其经过 频率选择表面之前的相位之差。当相移小于零时，表示相位延迟；当相移大于零时，表示相位超前。该频率选择表面的工作原理如上图1所示，图中各个频率选择表面的各个单元拥有不同的结构，即不同的导电图案，这样的不同的结构对于入射波产生的相移也不同，因此透过频率选择表面的出射波的波束相较于入射波发生偏移。当然，实际的入射波不一定是理想的平面波，但是通过调整各频率选择表面的各个单元的导电图案，频率选择表面的各个单元产生了不同的相移，依然可以达到调控波束宽度和指向的效果。需要注意，在实现所附加功能的同时，频率选择表面的频选功能并没有消失。即对于某个频段相当于金属板，将其信号全部反射回去；与此同时相对于另一个频段相当于透明的，即对该另一个频段的信号不产生任何影响。In summary, based on the above principle, the inventor of the present disclosure can transform the conductive patterns of each unit in the traditional frequency selective surface, so that the conductive patterns of each unit of the frequency selective surface at different positions can introduce desired Phase shift to achieve beam control. Here, the phase shift is the phase of the signal on the propagation path after passing through the frequency selection surface and the The difference in phase before the frequency selection surface. When the phase shift is less than zero, it indicates phase delay; when the phase shift is greater than zero, it indicates phase advance. The working principle of this frequency selective surface is shown in Figure 1 above. Each unit of each frequency selective surface in the figure has a different structure, that is, a different conductive pattern. Such different structures also produce different phase shifts for incident waves, so the transmission The beam of the outgoing wave passing through the frequency selective surface is shifted relative to the incident wave. Of course, the actual incident wave is not necessarily an ideal plane wave, but by adjusting the conductive pattern of each unit of each frequency-selective surface, each unit of the frequency-selective surface produces different phase shifts, and the effect of controlling the beam width and direction can still be achieved. . It should be noted that while the additional functions are implemented, the frequency selection function of the frequency selection surface does not disappear. That is, it is equivalent to a metal plate for a certain frequency band, reflecting all its signals; at the same time, it is equivalent to a transparent plate for another frequency band, that is, it does not have any impact on the signal of the other frequency band.
本公开内容基于上述两种理论，本公开内容提出了一种具有调控天线方向图功能的频率选择表面，其结构如图2所示。所述面板既具有频率选择的特性，又可以依据对电磁波传输相位的补偿达到波束赋形的作用。由于辐射元件辐射出的球面波前到达频率选择表面时，相位中心与每个频率选择表面单元之间的路径差导致了相应的相位差，为了将球面波前转化为期望的波前，就需要频率选择表面单元对不同路径的相位差予以补偿。本公开内容通过改变频率选择表面的各个单元的尺寸或结构，使通过频率选择表面不同位置处的电磁波的相移不同，从而实现相位补偿。图2示出了本公开内容面板所采用的3种不同的频率选择表面的导电图案，使频率选择表面形成渐变结构。例如，频率选择表面的导电图案220的传输相位比频率选择表面的导电图案210滞后10度左右，频率选择表面的导电图案230的传输相位比频率选择表面的导电图案220滞后10度左右。因此，不同的频率选择表面单元将电磁能量引到所需辐射方向，从而展宽了天线方向图的波瓣宽度。Based on the above two theories, this disclosure proposes a frequency selective surface with the function of regulating the antenna pattern, the structure of which is shown in Figure 2. The panel not only has the characteristics of frequency selection, but also can achieve the function of beam forming based on the compensation of the electromagnetic wave transmission phase. Since when the spherical wavefront radiated by the radiating element reaches the frequency selection surface, the path difference between the phase center and each frequency selection surface unit results in a corresponding phase difference. In order to convert the spherical wavefront into the desired wavefront, it is necessary to Frequency selective surface elements compensate for phase differences between different paths. The present disclosure achieves phase compensation by changing the size or structure of each unit of the frequency selection surface so that the phase shifts of the electromagnetic waves passing through the frequency selection surface at different positions are different. Figure 2 shows three different conductive patterns of frequency selective surfaces used in the panel of the present disclosure, so that the frequency selective surfaces form a gradient structure. For example, the transmission phase of the conductive pattern 220 on the frequency selective surface lags behind the conductive pattern 210 on the frequency selective surface by about 10 degrees, and the transmission phase of the conductive pattern 230 on the frequency selective surface lags behind the conductive pattern 220 on the frequency selective surface by about 10 degrees. Therefore, different frequency-selective surface elements direct electromagnetic energy into the desired radiation direction, thereby broadening the lobe width of the antenna pattern.
具体而言，基于这样的原理，本公开内容的发明人创新地想到涉及具有不同的导电图案的频率选择表面。图2示出了依据本公开内容的用于天线的频率选择表面200的结构示意图。具体而言，图2示出了依据本公开内容的发明构思的一种可能的实现形式的频率选择表面200的示意图。从图2之中可以看出，该频率选择表面包括介质层(例如图2中的白色区域以及黑色区域的下层部分)以及金属层(例如图2中的黑框部分)。在此， 该金属区例如能够接地，即形成一个接地层。从图2之中可以看出，金属层设置有镂空区。在图2所示出的示例之中，金属层包括三种导电图案，从左到右依次为导电图案210、导电图案220以及导电图案230，其中，这三个导电图案210、导电图案220以及导电图案230设置于镂空区内。Specifically, based on such principles, the inventors of the present disclosure innovatively thought of involving frequency selective surfaces having different conductive patterns. FIG. 2 shows a schematic structural diagram of a frequency selective surface 200 for an antenna according to the present disclosure. Specifically, FIG. 2 shows a schematic diagram of a frequency selection surface 200 according to one possible implementation form of the inventive concept of the present disclosure. As can be seen from FIG. 2 , the frequency selective surface includes a dielectric layer (such as the white area and the lower part of the black area in FIG. 2 ) and a metal layer (such as the black frame part in FIG. 2 ). here, This metal region can be grounded, for example, forming a ground plane. As can be seen from Figure 2, the metal layer is provided with a hollow area. In the example shown in FIG. 2 , the metal layer includes three conductive patterns, from left to right, the conductive pattern 210 , the conductive pattern 220 and the conductive pattern 230 , where the three conductive patterns 210 , 220 and 230 are The conductive pattern 230 is disposed in the hollow area.
从图2之中可以看出，如果将导电图案210与接地层即黑框部分之间的距离为第一间距并且导电图案220与接地层即黑框部分之间的距离为第二间距。例如导电图案210的顶边与黑框部分的间距为第一间距，而导电图案220的顶边与黑框部分的间距为第二间距，在图2的示例之中，所述第一间距明显所述第二间距不相等，而且第一间距会比第二间距更大。It can be seen from FIG. 2 that if the distance between the conductive pattern 210 and the ground layer (the black frame part) is the first pitch and the distance between the conductive pattern 220 and the ground layer (the black box part) is the second pitch. For example, the distance between the top edge of the conductive pattern 210 and the black frame part is the first distance, and the distance between the top edge of the conductive pattern 220 and the black frame part is the second distance. In the example of FIG. 2 , the first distance is obviously The second spacing is not equal, and the first spacing is larger than the second spacing.
但是本领域的技术人员应当了解，此处的三种导电图案仅仅是示例性的而非限制性的。依据本公开内容的发明构思主要是不同的导电图案对于所处理的信号会引入不同的相移，故依据本公开内容的频率选择表面至少应当具有两种不同的导电图案，至于到底要包括几种导电图案则能够根据具体要求来设计，而只要包括至少两种不同的导电图案的频率选择表面均将落入依据本公开内容所要求的保护的权利要求的保护范围之内。However, those skilled in the art should understand that the three conductive patterns here are only exemplary and not limiting. The main inventive concept according to the present disclosure is that different conductive patterns will introduce different phase shifts to the processed signals. Therefore, the frequency selective surface according to the present disclosure should have at least two different conductive patterns. How many types of conductive patterns should be included? The conductive patterns can be designed according to specific requirements, and as long as the frequency selective surface includes at least two different conductive patterns, it will fall within the scope of the claims claimed based on this disclosure.
如图2所示，本公开内容采用的频率选择表面的导电图案并非一整块金属片。概括而言，导电图案210或导电图案220包括至少两个金属贴片，在图2中所示出的示例之中包括4片金属贴片，而且每个金属贴片的形状相同。这些金属贴片中的任意两片金属贴片之间具有间隙。此外，从图2之中可以看出，金属贴片中设置有凹槽和/或凸起，所述凸起例如能够至少部分位于所述凹槽内。从左到右金属贴片逐渐变大，相应地，金属贴片的顶边至接地层即黑框部分的间距则会越来越小，从而使得频率选择表面能够形成渐变的结构。可以通过改变此处的间距的大小而不改变频率选择表面的周期大小来达到改变传输相位的效果，这样可以保证频率选择表面具有相同周期的频率选择表面单元，使渐变频率选择表面单元的分布更为简单灵活。As shown in Figure 2, the conductive pattern of the frequency selective surface used in the present disclosure is not a whole piece of metal. In summary, the conductive pattern 210 or the conductive pattern 220 includes at least two metal patches, including four metal patches in the example shown in FIG. 2 , and each metal patch has the same shape. There is a gap between any two of these metal patches. Furthermore, as can be seen from FIG. 2 , grooves and/or protrusions are provided in the metal patch, and the protrusions can, for example, be located at least partially within the grooves. The metal patch gradually becomes larger from left to right. Correspondingly, the distance between the top edge of the metal patch and the ground layer, that is, the black frame part, becomes smaller and smaller, allowing the frequency selection surface to form a gradient structure. The effect of changing the transmission phase can be achieved by changing the size of the spacing here without changing the period size of the frequency selection surface. This can ensure that the frequency selection surface has frequency selection surface units with the same period, making the distribution of the gradient frequency selection surface units more precise. For simplicity and flexibility.
本公开内容采用的不同的频率选择表面的导电图案不限于3个，可以为多个不同的频率选择表面的导电图案。在此，导电图案主要由金属贴片和不同的金属贴片之间的间隙构成，优选地，金属贴片分布可以包括多片金属贴片，而且在多片金属贴片之间能够具有间隙。此外，在金属片和边框之间也能够形成由上述的第一间距或者第二间距形成的镂空部分。 The conductive patterns of different frequency-selective surfaces used in the present disclosure are not limited to three, and may be multiple different conductive patterns of frequency-selective surfaces. Here, the conductive pattern mainly consists of metal patches and gaps between different metal patches. Preferably, the metal patch distribution can include multiple metal patches, and there can be gaps between multiple metal patches. In addition, a hollow portion formed by the above-mentioned first spacing or the second spacing can also be formed between the metal sheet and the frame.
进一步优选地，在依据本公开内容的一个实施例之中，所述第一组频率选择单元设置于所述频率选择表面的中间并且所述第二组频率选择单元设置于所述第一组频率选择单元的两侧，并且其中，所述第一相移比所述第二相移小或者所述第一相移比所述第二相移大。换句话说，频率选择表面的导电图案的相移可以从中心往两边变大，也可以从中心往两边变小。因而既可以设计出展宽波束宽度的频率选择表面，也可以设计出压缩波束宽度的频率选择表面，甚至可以设计出改变波束指向的频率选择表面，灵活地调控方向图。另外，频率选择表面单元的分布不限于按边列分布，可以根据不同的需求分布，如分布在中间列、按中心辐射状分布等。Further preferably, in an embodiment according to the present disclosure, the first group of frequency selection units is disposed in the middle of the frequency selection surface and the second group of frequency selection units is disposed in the first group of frequencies. Both sides of the cell are selected, and wherein the first phase shift is smaller than the second phase shift or the first phase shift is larger than the second phase shift. In other words, the phase shift of the conductive pattern on the frequency selective surface can be larger from the center to both sides, or can be smaller from the center to both sides. Therefore, it is possible to design a frequency selective surface that broadens the beam width, a frequency selective surface that compresses the beam width, or even a frequency selective surface that changes the beam direction to flexibly control the pattern. In addition, the distribution of frequency-selective surface units is not limited to distribution according to edge columns, but can be distributed according to different requirements, such as distribution in the middle column, radial distribution from the center, etc.
在此，本公开内容提出了一种具有调控方向图功能的频率选择表面，该频率选择表面可以为单层或多层平面结构，而且也可以为带通频率选择表面或高通频率选择表面。Here, the present disclosure proposes a frequency selective surface with the function of regulating the pattern. The frequency selective surface can be a single-layer or multi-layer planar structure, and can also be a band-pass frequency selective surface or a high-pass frequency selective surface.
以下结合附图3A至附图5C来描述依据本公开内容所提出的用于天线的频率选择表面。其中，图3A示出了依据本公开内容的一个实施例的用于天线的频率选择表面300A的结构示意图，图3B示出了依据本公开内容的另一个实施例的用于天线的频率选择表面300B的结构示意图，图3C示出了依据本公开内容的又一个实施例的用于天线的频率选择表面300C的结构示意图，而图3D示出了依据本公开内容的又一个实施例的用于天线的频率选择表面300D的结构示意图。The frequency selective surface for an antenna proposed according to the present disclosure will be described below with reference to FIGS. 3A to 5C. 3A shows a schematic structural diagram of a frequency selection surface 300A for an antenna according to one embodiment of the present disclosure, and FIG. 3B shows a frequency selection surface for an antenna according to another embodiment of the present disclosure. 300B, FIG. 3C shows a schematic structural diagram of a frequency selection surface 300C for an antenna according to another embodiment of the present disclosure, and FIG. 3D shows a schematic structural diagram of a frequency selection surface 300C for an antenna according to another embodiment of the present disclosure. Schematic diagram of the structure of the frequency selection surface 300D of the antenna.
从图3A至图3D的四个实现形式之中可以看出：图3A所示出的用于天线的频率选择表面300A仅包括两种导电图案，并且每种导电图案连续地仅存在一列；图3B所示出的用于天线的频率选择表面300B也仅包括两种导电图案，但是每种导电图案连续地存在两列；图3C所示出的用于天线的频率选择表面300C包括三种导电图案，并且中间的导电图案连续地存在两列；图3D所示出的用于天线的频率选择表面300D包括三种导电图案，并且中间的导电图案连续地存在多列。It can be seen from the four implementation forms of FIGS. 3A to 3D that the frequency selective surface 300A for an antenna shown in FIG. 3A only includes two conductive patterns, and each conductive pattern continuously exists in only one column; FIG. The frequency selective surface 300B for an antenna shown in FIG. 3B also only includes two conductive patterns, but each conductive pattern exists in two consecutive columns; the frequency selective surface 300C for an antenna shown in FIG. 3C includes three conductive patterns. pattern, and the middle conductive pattern continuously exists in two columns; the frequency selective surface 300D for an antenna shown in FIG. 3D includes three conductive patterns, and the middle conductive pattern continuously exists in multiple columns.
具体来看，图3A所示出的用于天线的频率选择表面300A包括四行三列的导电图案。概括而言，依据本公开内容的频率选择表面300A包括第一组频率选择单元310A，所述第一组频率选择单元310A中的每个第一频率选择单元包括第一导电图案3101A，即中间所示出的导电图案。此外，依据本公开内容的频率选择表面300A还包括第二组频率选择单元320A，所 述第二组频率选择单元320A中的每个第二频率选择单元包括第二导电图案3201A，即边缘所示出的导电图案。从图3A中可以看出，所述第一导电图案3101A和所述第二导电图案3201A不同。从图3A之中可以看出，如果将导电图案3101A与接地层即黑框部分之间的距离为第一间距并且导电图案3102A与金属层之间的距离为第二间距。例如导电图案3101A的顶边与黑框部分的间距为第一间距，而导电图案3102A的顶边与黑框部分的间距为第二间距，在图3A的示例之中，所述第一间距明显所述第二间距不相等，而且第一间距会比第二间距更大。在依据本公开内容的用于天线的频率选择表面300A中，由于所述第一导电图案3101A和所述第二导电图案3201A不同，从而能够达到借助于用于天线的频率选择表面300A实现对于出射波的优化调整的效果。在此，每个导电图案的外圈的黑色边框例如330A构成接地层。Specifically, the frequency selective surface 300A for an antenna shown in FIG. 3A includes four rows and three columns of conductive patterns. In summary, the frequency selection surface 300A according to the present disclosure includes a first set of frequency selection cells 310A, each of the first set of frequency selection cells 310A including a first conductive pattern 3101A, that is, the middle conductive pattern shown. In addition, the frequency selection surface 300A according to the present disclosure also includes a second set of frequency selection units 320A, so Each second frequency selection unit in the second set of frequency selection units 320A includes a second conductive pattern 3201A, that is, the conductive pattern shown on the edge. As can be seen from FIG. 3A , the first conductive pattern 3101A and the second conductive pattern 3201A are different. It can be seen from FIG. 3A that if the distance between the conductive pattern 3101A and the ground layer, that is, the black frame part, is the first pitch, and the distance between the conductive pattern 3102A and the metal layer is the second pitch. For example, the distance between the top edge of the conductive pattern 3101A and the black frame part is the first distance, and the distance between the top edge of the conductive pattern 3102A and the black frame part is the second distance. In the example of FIG. 3A , the first distance is obviously The second spacing is not equal, and the first spacing is larger than the second spacing. In the frequency selective surface for antenna 300A according to the present disclosure, since the first conductive pattern 3101A and the second conductive pattern 3201A are different, it is possible to achieve the output control by means of the frequency selective surface for antenna 300A. The effect of wave optimization adjustment. Here, the black frame of the outer circle of each conductive pattern, such as 330A, constitutes a ground layer.
此外，如图3A所示，本公开内容采用的频率选择表面的导电图案并非一整块金属片。概括而言，导电图案3101A或导电图案3102A包括至少两个金属贴片，在图3A中所示出的示例之中包括4片金属贴片，而且每个金属贴片的形状相同。这些金属贴片中的任意两片金属贴片之间具有间隙。此外，从图3A之中可以看出，金属贴片中设置有凹槽和/或凸起，所述凸起例如能够至少部分位于所述凹槽内。In addition, as shown in FIG. 3A , the conductive pattern of the frequency selective surface used in the present disclosure is not a whole piece of metal. In summary, the conductive pattern 3101A or the conductive pattern 3102A includes at least two metal patches, including four metal patches in the example shown in FIG. 3A , and the shape of each metal patch is the same. There is a gap between any two of these metal patches. Furthermore, as can be seen from FIG. 3A , grooves and/or protrusions are provided in the metal patch, and the protrusions can, for example, be located at least partially within the grooves.
更为具体而言，所述第一导电图案3101A的形状与第一相移相关联，并且所述第二导电图案3201A的形状与第二相移相关联，其中，所述第一相移不同于所述第二相移。以这样的方式，由于所述第一导电图案3101A和所述第二导电图案3201A不同，从而使得由所述第一导电图案3101A形成的第一相移和由所述第二导电图案3201A形成的所述第二相移不同，以便能够为经过相应的导电图案3101A或3201A的电磁波引入不同的相移，进而达到借助于用于天线的频率选择表面300A实现对于出射波的优化调整的效果。在此，将第一组频率选择单元310A设置为一列，这一列包括四个第一导电图案3101A，而第二组频率选择单元320A设置为两列，每一列包括四个第二导电图案3201A。在此，设置几列频率选择单元以及每一列频率选择单元包括几个导电图案均是可以变化的，其可以根据具体的设计要求进行设计。More specifically, the shape of the first conductive pattern 3101A is associated with a first phase shift, and the shape of the second conductive pattern 3201A is associated with a second phase shift, wherein the first phase shift is different at the second phase shift. In this manner, since the first conductive pattern 3101A and the second conductive pattern 3201A are different, the first phase shift formed by the first conductive pattern 3101A and the phase shift formed by the second conductive pattern 3201A are The second phase shifts are different so as to introduce different phase shifts to the electromagnetic waves passing through the corresponding conductive patterns 3101A or 3201A, thereby achieving the effect of optimal adjustment of the outgoing waves by means of the frequency selection surface 300A for the antenna. Here, the first group of frequency selection units 310A is arranged in one column, and this column includes four first conductive patterns 3101A, and the second group of frequency selection units 320A is arranged in two columns, and each column includes four second conductive patterns 3201A. Here, the number of columns of frequency selection units provided and the number of conductive patterns included in each column of frequency selection units can be changed, and can be designed according to specific design requirements.
图3B所示出的用于天线的频率选择表面300B包括四行六列的导电图 案。概括而言，依据本公开内容的频率选择表面300B包括第一组频率选择单元310B，所述第一组频率选择单元310B中的每个第一频率选择单元包括第一导电图案3101B，即中间所示出的导电图案。此外，依据本公开内容的频率选择表面300B还包括第二组频率选择单元320B，所述第二组频率选择单元320B中的每个第二频率选择单元包括第二导电图案3201B，即边缘所示出的导电图案。从图3B中可以看出，所述第一导电图案3101B和所述第二导电图案3201B不同。在依据本公开内容的用于天线的频率选择表面300B中，由于所述第一导电图案3101B和所述第二导电图案3201B不同，从而能够达到借助于用于天线的频率选择表面300B实现对于出射波的优化调整的效果。The frequency selective surface 300B for an antenna shown in FIG. 3B includes a conductive pattern of four rows and six columns. case. In summary, the frequency selection surface 300B according to the present disclosure includes a first set of frequency selection cells 310B, each of the first set of frequency selection cells 310B including a first conductive pattern 3101B, that is, the middle conductive pattern shown. In addition, the frequency selection surface 300B according to the present disclosure further includes a second group of frequency selection units 320B, each of the second group of frequency selection units 320B including a second conductive pattern 3201B, as shown in the edge. conductive pattern. As can be seen from FIG. 3B , the first conductive pattern 3101B and the second conductive pattern 3201B are different. In the frequency selection surface 300B for an antenna according to the present disclosure, since the first conductive pattern 3101B and the second conductive pattern 3201B are different, it is possible to achieve the output control by means of the frequency selection surface 300B for the antenna. The effect of wave optimization adjustment.
更为具体而言，所述第一导电图案3101B的形状与第一相移相关联，并且所述第二导电图案3201B的形状与第二相移相关联，其中，所述第一相移不同于所述第二相移。以这样的方式，由于所述第一导电图案3101B和所述第二导电图案3201B不同，从而使得由所述第一导电图案3101B形成的第一相移和由所述第二导电图案3201B形成的所述第二相移不同，以便能够为经过相应的导电图案3101B或3201B的电磁波引入不同的相移，进而达到借助于用于天线的频率选择表面300B实现对于出射波的优化调整的效果。在此，将第一组频率选择单元310B设置为两列，每一列包括四个第一导电图案3101B，而第二组频率选择单元320B设置为四列，每一列包括四个第二导电图案3201B。在此，设置几列频率选择单元以及每一列频率选择单元包括几个导电图案均是可以变化的，其可以根据具体的设计要求进行设计。More specifically, the shape of the first conductive pattern 3101B is associated with a first phase shift, and the shape of the second conductive pattern 3201B is associated with a second phase shift, wherein the first phase shift is different at the second phase shift. In this manner, since the first conductive pattern 3101B and the second conductive pattern 3201B are different, the first phase shift formed by the first conductive pattern 3101B and the phase shift formed by the second conductive pattern 3201B are The second phase shifts are different so as to introduce different phase shifts to the electromagnetic waves passing through the corresponding conductive patterns 3101B or 3201B, thereby achieving the effect of optimal adjustment of the outgoing waves by means of the frequency selection surface 300B for the antenna. Here, the first group of frequency selection units 310B is arranged in two columns, each column including four first conductive patterns 3101B, and the second group of frequency selection units 320B is arranged in four columns, each column including four second conductive patterns 3201B. . Here, the number of columns of frequency selection units provided and the number of conductive patterns included in each column of frequency selection units can be changed, and can be designed according to specific design requirements.
图3C所示出的用于天线的频率选择表面300C包括四行八列的导电图案。概括而言，依据本公开内容的频率选择表面300C包括第一组频率选择单元310C，所述第一组频率选择单元310C中的每个第一频率选择单元包括第一导电图案3101C，即中间所示出的导电图案。此外，依据本公开内容的频率选择表面300C还包括第二组频率选择单元320C，所述第二组频率选择单元320C中的每个第二频率选择单元包括第二导电图案3201C，即第二列、第三列、第六列和第七列所示出的导电图案。再者，依据本公开内容的频率选择表面300C还包括第三组频率选择单元330C，所述第三组频率选择单元330C中的每个第三频率选择单元包括第三导电图案3301C， 即边缘所示出的导电图案。The frequency selective surface 300C for an antenna shown in FIG. 3C includes four rows and eight columns of conductive patterns. In summary, the frequency selection surface 300C according to the present disclosure includes a first set of frequency selection cells 310C, each of the first set of frequency selection cells 310C including a first conductive pattern 3101C, that is, the middle conductive pattern shown. In addition, the frequency selection surface 300C according to the present disclosure further includes a second group of frequency selection cells 320C, each of the second group of frequency selection cells 320C including a second conductive pattern 3201C, ie, a second column , the conductive patterns shown in the third, sixth and seventh columns. Furthermore, the frequency selection surface 300C according to the present disclosure further includes a third group of frequency selection units 330C, each of the third group of frequency selection units 330C including a third conductive pattern 3301C, That is the conductive pattern shown on the edge.
从图3C中可以看出，所述第三导电图案3301C与所述第一导电图案3101C以及所述第二导电图案3201C均不同。以这样的方式，在依据本公开内容的用于天线的频率选择表面300C中，由于所述第一导电图案3101C、所述第二导电图案3201C和所述第三导电图案3301C均不同，从而使得由所述第一导电图案3101C形成的第一相移、由所述第二导电图案3201C形成的所述第二相移以及由所述第三导电图案3301C形成的所述第三相移不同，以便能够为经过相应的导电图案3101C、3201C和3301C的电磁波引入不同的相移，进而达到借助于用于天线的频率选择表面300C实现对于出射波的优化调整的效果。也就是说，在依据本公开内容的用于天线的频率选择表面300C中，由于所述第一导电图案3101C、所述第二导电图案3201C和所述第三导电图案3201C均不相同，从而能够达到借助于用于天线的频率选择表面300C实现对于出射波的优化调整的效果。在此，将第一组频率选择单元310C设置为两列，每一列包括四个第一导电图案3101C，第二组频率选择单元320C设置为四列，而第三组频率选择单元330C设置为两列，每一列包括四个第三导电图案3301C。在此，设置几列频率选择单元以及每一列频率选择单元包括几个导电图案均是可以变化的，其可以根据具体的设计要求进行设计。As can be seen from FIG. 3C , the third conductive pattern 3301C is different from the first conductive pattern 3101C and the second conductive pattern 3201C. In this way, in the frequency selective surface 300C for an antenna according to the present disclosure, since the first conductive pattern 3101C, the second conductive pattern 3201C and the third conductive pattern 3301C are all different, such that The first phase shift formed by the first conductive pattern 3101C, the second phase shift formed by the second conductive pattern 3201C, and the third phase shift formed by the third conductive pattern 3301C are different, In order to introduce different phase shifts into the electromagnetic waves passing through the corresponding conductive patterns 3101C, 3201C and 3301C, the effect of optimal adjustment of the outgoing waves is achieved by means of the frequency selection surface 300C for the antenna. That is to say, in the frequency selective surface 300C for an antenna according to the present disclosure, since the first conductive pattern 3101C, the second conductive pattern 3201C and the third conductive pattern 3201C are all different, it is possible to This achieves the effect of optimal adjustment of the outgoing wave by means of the frequency selection surface 300C for the antenna. Here, the first group of frequency selection units 310C is arranged in two columns, each column including four first conductive patterns 3101C, the second group of frequency selection units 320C is arranged in four columns, and the third group of frequency selection units 330C is arranged in two columns. columns, each column including four third conductive patterns 3301C. Here, the number of columns of frequency selection units provided and the number of conductive patterns included in each column of frequency selection units can be changed, and can be designed according to specific design requirements.
图3D所示出的用于天线的频率选择表面300D包括四行十六列的导电图案。概括而言，依据本公开内容的频率选择表面300D包括第一组频率选择单元310D，所述第一组频率选择单元310D中的每个第一频率选择单元包括第一导电图案3101D，即中间所示出的导电图案。此外，依据本公开内容的频率选择表面300D还包括第二组频率选择单元320D，所述第二组频率选择单元320D中的每个第二频率选择单元包括第二导电图案3201D，即第二列、第三列以及倒数第二列和第三列所示出的导电图案。再者，依据本公开内容的频率选择表面300D还包括第三组频率选择单元330D，所述第三组频率选择单元330D中的每个第三频率选择单元包括第三导电图案3301D，即第一列和倒数第一列所示出的导电图案。从图3D中可以看出，所述第三导电图案3301D与所述第一导电图案3101D以及所述第二导电图案3201D均不同。以这样的方式，在依据本公开内容的用于天线的频率选择表面300D中，由于所述第一导电图案3101D、所述第二导电图案3201D 和所述第三导电图案3301D均不同，从而使得由所述第一导电图案3101D形成的第一相移、由所述第二导电图案3201D形成的所述第二相移以及由所述第三导电图案3301D形成的所述第三相移不同，以便能够为经过相应的导电图案3101D、3201D和3301D的电磁波引入不同的相移，进而达到借助于用于天线的频率选择表面300D实现对于出射波的优化调整的效果。也就是说，在依据本公开内容的用于天线的频率选择表面300D中，由于所述第一导电图案3101D、所述第二导电图案3201D和所述第三导电图案3201D均不相同，从而能够达到借助于用于天线的频率选择表面300D实现对于出射波的优化调整的效果。在此，将第一组频率选择单元310D设置为十列，每一列包括四个第一导电图案3101D，第二组频率选择单元320D设置为四列，而第三组频率选择单元330D设置为两列，每一列包括四个第三导电图案3301D。在此，设置几列频率选择单元以及每一列频率选择单元包括几个导电图案均是可以变化的，其可以根据具体的设计要求进行设计。The frequency selective surface 300D for an antenna shown in FIG. 3D includes four rows and sixteen columns of conductive patterns. In summary, the frequency selection surface 300D according to the present disclosure includes a first set of frequency selection cells 310D, each of the first set of frequency selection cells 310D including a first conductive pattern 3101D, that is, the middle conductive pattern shown. In addition, the frequency selection surface 300D according to the present disclosure further includes a second group of frequency selection cells 320D, each of the second group of frequency selection cells 320D including a second conductive pattern 3201D, that is, a second column , the third column, and the conductive patterns shown in the penultimate and third columns. Furthermore, the frequency selection surface 300D according to the present disclosure also includes a third group of frequency selection units 330D, and each third frequency selection unit in the third group of frequency selection units 330D includes a third conductive pattern 3301D, that is, a first columns and the conductive pattern shown in the penultimate column. As can be seen from FIG. 3D , the third conductive pattern 3301D is different from the first conductive pattern 3101D and the second conductive pattern 3201D. In this manner, in the frequency selective surface 300D for an antenna according to the present disclosure, since the first conductive pattern 3101D, the second conductive pattern 3201D and the third conductive pattern 3301D are different, so that the first phase shift formed by the first conductive pattern 3101D, the second phase shift formed by the second conductive pattern 3201D and the third phase shift are different from each other. The third phase shift formed by the conductive pattern 3301D is different, so as to introduce different phase shifts to the electromagnetic waves passing through the corresponding conductive patterns 3101D, 3201D and 3301D, thereby achieving the purpose of controlling the outgoing wave by means of the frequency selective surface 300D for the antenna. The effect of optimization adjustment. That is to say, in the frequency selection surface 300D for an antenna according to the present disclosure, since the first conductive pattern 3101D, the second conductive pattern 3201D and the third conductive pattern 3201D are all different, it is possible to This achieves the effect of optimal adjustment of the outgoing wave by means of the frequency selection surface 300D for the antenna. Here, the first group of frequency selection units 310D is set to ten columns, each column including four first conductive patterns 3101D, the second group of frequency selection units 320D is set to four columns, and the third group of frequency selection units 330D is set to two columns, each column including four third conductive patterns 3301D. Here, the number of columns of frequency selection units provided and the number of conductive patterns included in each column of frequency selection units can be changed, and can be designed according to specific design requirements.
在上述的图3A至图3D所示出的四个具体实现方式之中，本公开内容采用的频率选择表面的导电图案可以在保证频率选择表面的周期不变的情况下改变传输相位，使不同尺寸的频率选择表面的各个单元布局更为方便灵活。本公开内容的具有调控方向图功能的频率选择表面向着频率选择表面的边缘方向既可以使得频率选择表面的各个单元的相移不变或逐渐变小，以用于展宽天线的波束宽度；也可以向着频率选择表面的边缘方向使得频率选择表面的各个单元的相移不变或逐渐变大，以用于压缩天线的波束宽度。当然，基于以上的描述可知，频率选择表面的各个单元的相移也可以大小交错地分布，即例如先变大后变小然后再变大，以调控天线的方向图。本公开内容的具有调控方向图功能的频率选择表中，产生不同相移的频率选择表面的各个单元既可以分布在频率选择表面的部分区域，即形状只沿着一个方向变化；也可以分布在整体的频率选择表面上，即形状只沿着一个方向变化；也可以按中心辐射状分布在部分或整体的频率选择表面上。Among the four specific implementations shown in FIGS. 3A to 3D , the conductive pattern of the frequency selective surface used in the present disclosure can change the transmission phase while ensuring that the period of the frequency selective surface remains unchanged, so that different The size of the frequency selection surface makes the layout of each unit more convenient and flexible. The frequency selection surface with the pattern control function of the present disclosure can be directed toward the edge of the frequency selection surface so that the phase shift of each unit of the frequency selection surface remains unchanged or gradually becomes smaller, so as to broaden the beam width of the antenna; or it can The phase shift of each unit of the frequency selection surface is made constant or gradually larger toward the edge of the frequency selection surface, so as to compress the beam width of the antenna. Of course, based on the above description, it can be known that the phase shifts of each unit of the frequency selection surface can also be distributed in staggered sizes, that is, for example, first become larger, then become smaller, and then become larger again, in order to control the antenna pattern. In the frequency selection table with the control pattern function of the present disclosure, each unit of the frequency selection surface that generates different phase shifts can be distributed in part of the frequency selection surface, that is, the shape only changes along one direction; it can also be distributed in On the overall frequency selection surface, that is, the shape only changes along one direction; it can also be distributed in a central radial shape on part or the entire frequency selection surface.
图4示出了依据本公开内容的另一个实施例的用于天线的频率选择表面400的结构示意图。图4所示出的用于天线的频率选择表面400包括四行十八列的导电图案。概括而言，依据本公开内容的频率选择表面400包括第一组频率选择单元410，所述第一组频率选择单元410中的每个第一频 率选择单元包括第一导电图案4101，即中间所示出的导电图案。此外，依据本公开内容的频率选择表面400还包括第二组频率选择单元420，所述第二组频率选择单元420中的每个第二频率选择单元包括第二导电图案4201，即第三列、第四列以及倒数第三列和第四列所示出的导电图案。再者，依据本公开内容的频率选择表面400还包括第三组频率选择单元430，所述第三组频率选择单元430中的每个第三频率选择单元包括第三导电图案4301，即第二列和倒数第二列所示出的导电图案。再者，图4所示出的频率选择表面400还包括寄生单元440，所述寄生单元440被设置在所述频率选择表面440的边缘。其中，寄生单元440包括图案4401。所述寄生单元440用于优化因边列环境而恶化的辐射单元的方向图，从而有效地改善多频基站天线的辐射方向图。进一步优选地，在依据本公开内容的一个实施例之中，所述寄生单元440被构造为方形金属片。也就是说，依据本公开内容的发明构思在频率选择表面的两边加入寄生单元，可以有效的改善边列辐射单元的方向图。本公开内容的寄生单元440在图4中示出为正方形，但不局限于正方形。而且本公开内容中的寄生单元440数量和位置都不做限制，可以根据实际需求调整。此外，本公开内容的寄生单元440既可以加在具有调控方向图功能的频率选择表面的两边，也可以加在传统的周期性非渐变频率选择表面的两边。再者，本公开内容的寄生单元440既可以用于展宽边列辐射单元的方向图，也可以用于缩窄边列辐射单元的方向图。4 shows a schematic structural diagram of a frequency selective surface 400 for an antenna according to another embodiment of the present disclosure. The frequency selective surface 400 for an antenna shown in FIG. 4 includes four rows and eighteen columns of conductive patterns. In summary, a frequency selection surface 400 in accordance with the present disclosure includes a first set of frequency selection units 410 in which each first frequency The rate selection unit includes a first conductive pattern 4101, the conductive pattern shown in the middle. In addition, the frequency selection surface 400 according to the present disclosure further includes a second group of frequency selection cells 420, each of the second group of frequency selection cells 420 including a second conductive pattern 4201, ie, a third column , the fourth column, and the conductive patterns shown in the third and fourth columns from the bottom. Furthermore, the frequency selection surface 400 according to the present disclosure further includes a third group of frequency selection units 430, each of the third group of frequency selection units 430 includes a third conductive pattern 4301, that is, a second column and the conductive pattern shown in the penultimate column. Furthermore, the frequency selection surface 400 shown in FIG. 4 also includes a parasitic unit 440, which is disposed at the edge of the frequency selection surface 440. Among them, the parasitic unit 440 includes a pattern 4401. The parasitic unit 440 is used to optimize the pattern of the radiation unit that is deteriorated by the side column environment, thereby effectively improving the radiation pattern of the multi-frequency base station antenna. Further preferably, in one embodiment according to the present disclosure, the parasitic unit 440 is configured as a square metal sheet. That is to say, adding parasitic units on both sides of the frequency selection surface according to the inventive concept of the present disclosure can effectively improve the pattern of the side row radiating units. The parasitic unit 440 of the present disclosure is shown as a square in Figure 4, but is not limited to a square. Moreover, the number and location of the parasitic units 440 in this disclosure are not limited and can be adjusted according to actual needs. In addition, the parasitic unit 440 of the present disclosure can be added on both sides of the frequency selection surface with the function of regulating the pattern, or on both sides of the traditional periodic non-gradient frequency selection surface. Furthermore, the parasitic unit 440 of the present disclosure can be used to widen the pattern of the side row radiating units, or can be used to narrow the direction pattern of the side row radiating units.
概括地讲，为了进一步地展宽边列辐射单元的方向图，本公开内容在具有调控天线方向图功能的频率选择表面两边加入了寄生单元，如图4所示。所述寄生单元工作在需要展宽方向图的辐射单元的工作频段，其数量和相对位置与需要展宽方向图的辐射单元的位置和数量相关，其形状可以为正方形但不局限于正方形。这样，在具有调控方向图功能的频率选择表面两边的寄生单元可进一步地展宽边列辐射单元的方向图。同样地，所述寄生单元也可以加在传统的周期性非渐变频率选择表面的两边，用于展宽或缩窄边列辐射单元的方向图。In summary, in order to further broaden the pattern of the side column radiating unit, the present disclosure adds parasitic units on both sides of the frequency selection surface with the function of regulating the antenna pattern, as shown in FIG. 4 . The parasitic units work in the operating frequency band of the radiation units that need to broaden the pattern. Their number and relative position are related to the location and number of the radiation units that need to broaden the pattern. Their shape can be square but is not limited to square. In this way, the parasitic units on both sides of the frequency selection surface with the function of controlling the pattern can further broaden the pattern of the side row radiating units. Similarly, the parasitic elements can also be added on both sides of the traditional periodic non-gradient frequency selection surface to broaden or narrow the pattern of the side row radiating elements.
此外，从图4中可以看出，所述第三导电图案4301与所述第一导电图案4101以及所述第二导电图案4201均不同。以这样的方式，在依据本公开内容的用于天线的频率选择表面400中，由于所述第一导电图案4101、 所述第二导电图案4201和所述第三导电图案4301均不同，从而使得由所述第一导电图案4101形成的第一相移、由所述第二导电图案4201形成的所述第二相移以及由所述第三导电图案4301形成的所述第三相移不同，以便能够为经过相应的导电图案4101、4201和4301的电磁波引入不同的相移，进而达到借助于用于天线的频率选择表面400实现对于出射波的优化调整的效果。换句话说，在依据本公开内容的用于天线的频率选择表面400中，由于所述第一导电图案4101、所述第二导电图案4201和所述第三导电图案4301均不相同，从而能够达到借助于用于天线的频率选择表面400实现对于出射波的优化调整的效果。在此，将第一组频率选择单元410设置为十列，每一列包括四个第一导电图案4101，第二组频率选择单元420设置为四列，而第三组频率选择单元430设置为两列，每一列包括四个第三导电图案4301。在此，设置几列频率选择单元以及每一列频率选择单元包括几个导电图案均是可以变化的，其可以根据具体的设计要求进行设计。In addition, as can be seen from FIG. 4 , the third conductive pattern 4301 is different from the first conductive pattern 4101 and the second conductive pattern 4201 . In this way, in the frequency selective surface 400 for an antenna according to the present disclosure, since the first conductive pattern 4101, The second conductive pattern 4201 and the third conductive pattern 4301 are different, so that the first phase formed by the first conductive pattern 4101 shifts, and the second phase formed by the second conductive pattern 4201 The shift and the third phase shift formed by the third conductive pattern 4301 are different, so that different phase shifts can be introduced for the electromagnetic waves passing through the corresponding conductive patterns 4101, 4201 and 4301, thereby achieving the frequency used for the antenna. The surface 400 is selected to achieve the effect of optimal adjustment of the outgoing wave. In other words, in the frequency selective surface 400 for an antenna according to the present disclosure, since the first conductive pattern 4101, the second conductive pattern 4201 and the third conductive pattern 4301 are all different, it is possible to This achieves the effect of optimal adjustment of the outgoing wave by means of the frequency selection surface 400 for the antenna. Here, the first group of frequency selection units 410 is arranged in ten columns, each column including four first conductive patterns 4101, the second group of frequency selection units 420 is arranged in four columns, and the third group of frequency selection units 430 is arranged in two columns, each column including four third conductive patterns 4301. Here, the number of columns of frequency selection units provided and the number of conductive patterns included in each column of frequency selection units can be changed, and can be designed according to specific design requirements.
图5A示出了依据本公开内容的一个实施例的有源和无源一体化的天线***500的组装示意图。图5A所示出的依据本公开内容所提出的天线***包括第一天线、第二天线、以及根据本公开内容的上述方面所描述的频率选择表面，其中，所述第一天线和所述第二天线分别设置在所述频率选择表面的两侧。由于图5A是一个组装视图，故看不出依据本公开内容所提出的频率选择表面。但是可以看到第一天线的安装支架13、第二天线的天线罩顶部1、以及第二天线的天线罩底部7。FIG. 5A shows an assembly diagram of an active and passive integrated antenna system 500 according to one embodiment of the present disclosure. The antenna system proposed according to the present disclosure shown in FIG. 5A includes a first antenna, a second antenna, and a frequency selection surface described according to the above aspects of the present disclosure, wherein the first antenna and the third antenna Two antennas are respectively arranged on both sides of the frequency selection surface. Since FIG. 5A is an assembly view, the frequency selective surface proposed in accordance with the present disclosure is not visible. However, the mounting bracket 13 of the first antenna, the radome top 1 of the second antenna, and the radome bottom 7 of the second antenna can be seen.
图5B示出了图5A所示出的天线***500的分解示意图。如图5B所示，该实施例所示出的天线***500包括第一天线9以及第二天线4，第一天线9和第二天线4为工作在不同工作频段的天线。示例性地，第一天线9为5G天线，第二天线4为2G、3G或4G天线。继续参考图5B，该实施例中的天线***500还包括第二天线的天线罩顶部1、第二天线的天线罩支撑件2、第二天线支撑件3、频率选择表面5、金属框架支撑6、第二天线的天线罩底部7、第一天线的天线罩8、第一反射板10、固定件11、第一射频拉远单元RRU 12。第一反射板10通过固定件11固定于第一射频拉远单元RRU 12的上方，第一天线9设置在第一反射板10的上方，第一天线的天线罩8通过螺钉固定在第一射频拉远单元RRU 12上方，并将第一天线9和第一反射板10覆盖在其下方。可将上述单元作为一个A天线模块。 频率选择表面5通过金属框架支撑6固定于第二天线的天线罩底部7的上方，第二天线4包括第二天线辐射体、第二天线馈电巴伦、第二天线基板和第二天线馈电电缆41，第二天线馈电巴伦的上端与第二天线辐射体电性连接，第二天线馈电巴伦的下端与第二天线基板电性连接，并由第二天线馈电电缆进行馈电，第二天线馈电电缆固定于金属框架支撑6上方。频率选择表面5，对第一天线9构成开路，对第二天线4构成地结构。且频率选择表面5的两边有两列加大的不同尺寸的频率选择表面单元，具有调控方向图的功能，可以展宽辐射单元的方向图。进一步地，频率选择表面5的两边分别加入了一列寄生单元，用于展宽边列辐射单元的方向图。可将上述单元作为一个P天线模块。继续参考图5B，示例性的，已有的基站上设置有一个P天线模块，在需要增设A天线模块时，将A天线模块通过安装支架13与P天线模块固定在一起，即可一起工作。采用上述方式，无需对现有的基站进行大规模的改装扩建，即可增加基站通信频段，改善基站的通信效果。同时，A天线模块和P天线模块又可以分别单独工作，提高了天线的模块化程度，改善了基站天线使用的灵活性，节约了基站天线的建设成本。FIG. 5B shows an exploded schematic diagram of the antenna system 500 shown in FIG. 5A. As shown in Figure 5B, the antenna system 500 shown in this embodiment includes a first antenna 9 and a second antenna 4. The first antenna 9 and the second antenna 4 are antennas operating in different operating frequency bands. For example, the first antenna 9 is a 5G antenna, and the second antenna 4 is a 2G, 3G or 4G antenna. Continuing to refer to FIG. 5B , the antenna system 500 in this embodiment also includes a second antenna radome top 1 , a second antenna radome support 2 , a second antenna support 3 , a frequency selection surface 5 , and a metal frame support 6 , the radome bottom 7 of the second antenna, the radome 8 of the first antenna, the first reflection plate 10 , the fixing member 11 , and the first radio frequency remote unit RRU 12 . The first reflection plate 10 is fixed above the first radio frequency remote unit RRU 12 through the fixing member 11. The first antenna 9 is arranged above the first reflection plate 10. The radome 8 of the first antenna is fixed on the first radio frequency remote unit RRU 12 through screws. Above the remote unit RRU 12, cover the first antenna 9 and the first reflector 10 below it. The above unit can be used as an A antenna module. The frequency selection surface 5 is fixed above the radome bottom 7 of the second antenna through a metal frame support 6. The second antenna 4 includes a second antenna radiator, a second antenna feed balun, a second antenna substrate and a second antenna feed. Electrical cable 41, the upper end of the second antenna feed balun is electrically connected to the second antenna radiator, the lower end of the second antenna feed balun is electrically connected to the second antenna substrate, and is connected by the second antenna feed cable Feeding, the second antenna feed cable is fixed above the metal frame support 6. The frequency selection surface 5 forms an open circuit for the first antenna 9 and a ground structure for the second antenna 4 . Moreover, there are two columns of enlarged frequency selection surface units of different sizes on both sides of the frequency selection surface 5, which have the function of regulating the pattern and can broaden the pattern of the radiation unit. Furthermore, a row of parasitic units is added to both sides of the frequency selection surface 5 to broaden the pattern of the side rows of radiating units. The above unit can be used as a P antenna module. Continuing to refer to FIG. 5B , for example, an existing base station is provided with a P antenna module. When an A antenna module needs to be added, the A antenna module and the P antenna module can be fixed together through the mounting bracket 13 to work together. Using the above method, the communication frequency band of the base station can be increased and the communication effect of the base station can be improved without large-scale modification and expansion of the existing base station. At the same time, the A antenna module and the P antenna module can work independently, which improves the modularity of the antenna, improves the flexibility of using the base station antenna, and saves the construction cost of the base station antenna.
为了减小第二天线馈电电缆41对第一天线9的边列辐射方向图的影响，可以将第二天线馈电电缆41沿着频率选择表面5的接地网格线走线。图5C示出了图5B中的辐射单元的馈电电缆的接线示意图。进一步地，可以将第二天线馈电电缆41焊接在频率选择表面5的接地网格线上，从而基本消除了第二天线馈电电缆41的横向走线对第一天线9的辐射方向图的影响。进一步地，可以将第二天线馈电电缆41的走线远离第一天线9，走在金属框架支撑6的上方。进一步地，可以将第二天线馈电电缆41隐藏在金属框架支撑6的里面，从而基本消除了第二天线馈电电缆41的竖向走线对第一天线9的辐射方向图的影响，如图5C所示。也就是说，本公开内容将第二天线馈电电缆的横向走线焊接在频率选择表面的接地网格线上，从而基本消除了第二天线馈电电缆的横向走线对第一天线的辐射方向图的影响。本公开内容将第二天线馈电电缆的竖向走线隐藏在金属框架支撑的里面，从而基本消除了第二天线馈电电缆的竖向走线对第一天线的辐射方向图的影响。In order to reduce the influence of the second antenna feed cable 41 on the side column radiation pattern of the first antenna 9 , the second antenna feed cable 41 can be routed along the ground grid lines of the frequency selection surface 5 . FIG. 5C shows a schematic connection diagram of the feed cable of the radiating unit in FIG. 5B. Further, the second antenna feed cable 41 can be welded to the ground grid line of the frequency selection surface 5 , thereby basically eliminating the interference of the lateral routing of the second antenna feed cable 41 on the radiation pattern of the first antenna 9 Influence. Further, the second antenna feed cable 41 can be routed away from the first antenna 9 and above the metal frame support 6 . Furthermore, the second antenna feed cable 41 can be hidden inside the metal frame support 6, thereby basically eliminating the impact of the vertical routing of the second antenna feed cable 41 on the radiation pattern of the first antenna 9, such as As shown in Figure 5C. That is to say, the present disclosure welds the lateral wiring of the second antenna feed cable to the ground grid line of the frequency selection surface, thereby basically eliminating the radiation of the first antenna by the lateral wiring of the second antenna feed cable Directional influence. The present disclosure hides the vertical wiring of the second antenna feed cable inside the metal frame support, thereby basically eliminating the impact of the vertical wiring of the second antenna feed cable on the radiation pattern of the first antenna.
综上所述，在依据本公开内容的技术方案之中，由于所述第一导电图案和所述第二导电图案不同，从而能够为经过相应的导电图案的电磁波引 入不同的相移，进而达到借助于用于天线的频率选择表面实现对于出射波的优化调整的效果。也就是说，本公开内容在传统频率选择表面的基础上加入调控方向图的功能，构成渐变结构的频率选择表面，依据本公开内容的频率选择表面不仅具有频率选择功能，而且还可以有效的改善辐射单元的方向图。To sum up, in the technical solution according to the present disclosure, since the first conductive pattern and the second conductive pattern are different, it is possible to guide the electromagnetic waves passing through the corresponding conductive pattern. Different phase shifts are introduced to achieve the effect of optimal adjustment of the outgoing wave by means of the frequency selection surface used for the antenna. That is to say, the present disclosure adds the function of regulating the pattern on the basis of the traditional frequency selection surface to form a frequency selection surface with a gradient structure. The frequency selection surface according to the present disclosure not only has the frequency selection function, but also can effectively improve the frequency selection surface. Radiating element pattern.
在前述实施例中，频率选择表面上的图案都能够例如产生相位延迟，但是在其他的实施例之中，频率选择表面上的图案也能够被设计为使得相位超前，也能够实现类似的效果。In the foregoing embodiments, the patterns on the frequency selection surface can, for example, produce phase delay. However, in other embodiments, the patterns on the frequency selection surface can also be designed to advance the phase, and similar effects can be achieved.
以上所述仅为本公开内容的实施例可选实施例，并不用于限制本公开内容的实施例，对于本领域的技术人员来说，本公开内容的实施例可以有各种更改和变化。凡在本公开内容的实施例的精神和原则之内，所作的任何修改、等效替换、改进等，均应包含在本公开内容的实施例的保护范围之内。The above are only optional embodiments of the present disclosure and are not intended to limit the embodiments of the present disclosure. For those skilled in the art, various modifications and changes may be made to the embodiments of the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure shall be included in the protection scope of the embodiments of the present disclosure.
虽然已经参考若干具体实施例描述了本公开内容的实施例，但是应当理解，本公开内容的实施例并不限于所公开的具体实施例。本公开内容的实施例旨在涵盖在所附权利要求的精神和范围内所包括的各种修改和等同布置。权利要求的范围符合最宽泛的解释，从而包含所有这样的修改及等同结构和功能。 While embodiments of the present disclosure have been described with reference to a number of specific embodiments, it is to be understood that embodiments of the present disclosure are not limited to the specific embodiments disclosed. The embodiments of the present disclosure are intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The scope of the claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims (21)

  1. 一种用于天线的频率选择表面，其特征在于，所述频率选择表面包括：A frequency selective surface for an antenna, characterized in that the frequency selective surface includes:
    第一组频率选择单元，所述第一组频率选择单元中的每个第一频率选择单元包括第一导电图案；以及a first set of frequency selection units, each first frequency selection unit of the first set of frequency selection units including a first conductive pattern; and
    第二组频率选择单元，所述第二组频率选择单元中的每个第二频率选择单元包括第二导电图案，其中，所述第一导电图案和所述第二导电图案不同。A second group of frequency selection units, each second frequency selection unit in the second group of frequency selection units includes a second conductive pattern, wherein the first conductive pattern and the second conductive pattern are different.
  2. 根据权利要求1所述的频率选择表面，其特征在于，所述第一导电图案的形状与第一相移相关联，并且所述第二导电图案的形状与第二相移相关联，其中，所述第一相移不同于所述第二相移。The frequency selective surface of claim 1, wherein the shape of the first conductive pattern is associated with a first phase shift and the shape of the second conductive pattern is associated with a second phase shift, wherein: The first phase shift is different from the second phase shift.
  3. 根据权利要求2所述的频率选择表面，其特征在于，所述第一组频率选择单元设置于所述频率选择表面的中间并且所述第二组频率选择单元设置于所述第一组频率选择单元的两侧，并且其中，所述第一相移比所述第二相移小或者所述第一相移比所述第二相移大。The frequency selection surface according to claim 2, wherein the first group of frequency selection units is disposed in the middle of the frequency selection surface and the second group of frequency selection units is disposed in the first group of frequency selection surfaces. Both sides of the unit, and wherein the first phase shift is smaller than the second phase shift or the first phase shift is larger than the second phase shift.
  4. 根据权利要求1所述的频率选择表面，其特征在于，所述第一组频率选择单元位于一行或者一列，并且所述第二组频率选择单元位于另外的行或列。The frequency selection surface of claim 1, wherein the first group of frequency selection units is located in one row or column, and the second group of frequency selection units is located in another row or column.
  5. 根据权利要求1所述的频率选择表面，其特征在于，所述频率选择表面还包括：The frequency selection surface according to claim 1, characterized in that the frequency selection surface further includes:
    第三组频率选择单元，所述第三组频率选择单元中的每个第三频率选择单元包括第三导电图案，其中，所述第三导电图案与所述第一导电图案以及所述第二导电图案均不同。A third group of frequency selection units, each third frequency selection unit in the third group of frequency selection units includes a third conductive pattern, wherein the third conductive pattern is connected to the first conductive pattern and the second The conductive patterns are all different.
  6. 根据权利要求5所述的频率选择表面，其特征在于，所述第三导电图案的形状与第三相移相关联，并且其中，所述第三相移与所述第一相移 和所述第二相移均不相同。The frequency selective surface of claim 5, wherein the shape of the third conductive pattern is associated with a third phase shift, and wherein the third phase shift is the same as the first phase shift. are different from the second phase shift.
  7. 根据权利要求1所述的频率选择表面，其特征在于，所述频率选择表面还包括：The frequency selection surface according to claim 1, characterized in that the frequency selection surface further includes:
    寄生单元，所述寄生单元被设置在所述频率选择表面的边缘。A parasitic unit, the parasitic unit is arranged at the edge of the frequency selection surface.
  8. 根据权利要求7所述的频率选择表面，其特征在于，所述寄生单元被构造为方形金属片。Frequency selective surface according to claim 7, characterized in that the parasitic elements are configured as square metal sheets.
  9. 根据权利要求1所述的频率选择表面，其特征在于，所述频率选择表面还包括金属层，所述金属层设置有若干镂空区，并且其中，所述第一导电图案、第二导电图案分别设置于镂空区内。The frequency selective surface according to claim 1, characterized in that the frequency selective surface further includes a metal layer, the metal layer is provided with a plurality of hollow areas, and wherein the first conductive pattern and the second conductive pattern are respectively Set in the hollow area.
  10. 根据权利要求9所述的频率选择表面，其特征在于，所述第一导电图案与接地层之间的距离为第一间距并且所述第二导电图案与金属层之间的距离为第二间距，并且其中，所述第一间距和所述第二间距不相等。The frequency selective surface according to claim 9, wherein the distance between the first conductive pattern and the ground layer is a first pitch and the distance between the second conductive pattern and the metal layer is a second pitch. , and wherein the first spacing and the second spacing are not equal.
  11. 根据权利要求1所述的频率选择表面，其特征在于，所述第一导电图案或第二导电图案包括至少两个金属贴片，并且其中，所述至少两个金属贴片之间具有间隙。The frequency selective surface according to claim 1, wherein the first conductive pattern or the second conductive pattern includes at least two metal patches, and wherein there is a gap between the at least two metal patches.
  12. 根据权利要求11所述的频率选择表面，其特征在于，所述至少两个金属贴片中的一个设置有凹槽并且另一个设置有凸起，所述凸起至少部分位于所述凹槽内。The frequency selective surface of claim 11 , wherein one of the at least two metal patches is provided with a groove and the other is provided with a protrusion, the protrusion being at least partially located within the groove. .
  13. 根据权利要求12所述的频率选择表面，其特征在于，所述金属贴片的数量为4个，且每个金属贴片的形状相同。The frequency selective surface according to claim 12, characterized in that the number of the metal patches is four, and the shape of each metal patch is the same.
  14. 根据权利要求1所述的频率选择表面，其特征在于，所述第二组频率选择单元的数量为是所述第一组频率选择单元的数量的两倍，并且其中，所述第一组频率选择单元位于一对所述第二组频率选择单元之间。 The frequency selection surface according to claim 1, wherein the number of the second set of frequency selection units is twice the number of the first set of frequency selection units, and wherein the first set of frequency selection units The selection unit is located between a pair of said second group frequency selection units.
  15. 一种天线***，其特征在于，所述天线***包括：An antenna system, characterized in that the antenna system includes:
    第一天线；first antenna;
    第二天线；以及second antenna; and
    根据权利要求1至14中任一项所述的频率选择表面，其中，所述第一天线和所述第二天线分别设置在所述频率选择表面的两侧。The frequency selection surface according to any one of claims 1 to 14, wherein the first antenna and the second antenna are respectively disposed on both sides of the frequency selection surface.
  16. 根据权利要求15所述的天线***，其特征在于，所述第一天线和所述第二天线分别被构造为独立的结构。The antenna system of claim 15, wherein the first antenna and the second antenna are each configured as an independent structure.
  17. 根据权利要求16所述的天线***，其特征在于，所述天线***还包括第一天线的天线罩和第二天线的天线罩，所述第一天线的天线罩和所述第二天线的天线罩分别被构造用于保护所述第一天线和所述第二天线，其中，所述第一天线的天线罩和所述第二天线的天线罩包括相互适配的安装固定结构。The antenna system according to claim 16, characterized in that the antenna system further includes a radome of the first antenna and a radome of the second antenna, the radome of the first antenna and the antenna of the second antenna. Covers are respectively configured to protect the first antenna and the second antenna, wherein the radome of the first antenna and the radome of the second antenna include mutually adapted mounting and fixing structures.
  18. 根据权利要求17所述的天线***，其特征在于，所述频率选择表面被设置在所述第一天线的天线罩或者所述第二天线的天线罩之中。The antenna system of claim 17, wherein the frequency selective surface is provided in a radome of the first antenna or a radome of the second antenna.
  19. 根据权利要求15所述的天线***，其特征在于，所述第一天线被构造为5G天线，并且所述第二天线被构造为非5G天线。The antenna system of claim 15, wherein the first antenna is configured as a 5G antenna and the second antenna is configured as a non-5G antenna.
  20. 根据权利要求15所述的天线***，其特征在于，所述天线***还包括被构造用于支撑所述频率选择表面的支架，并且其中，用于为所述第一天线或者所述第二天线馈电的馈电电缆沿着所述支架走线。The antenna system of claim 15, further comprising a bracket configured to support the frequency selective surface, and wherein the first antenna or the second antenna is The feeder cables for the power feed are routed along the bracket.
  21. 根据权利要求20所述的天线***，其特征在于，用于为所述第一天线或者所述第二天线馈电的馈电电缆沿着所述频率选择表面的接地网格线走线。 The antenna system according to claim 20, wherein a feed cable used to feed the first antenna or the second antenna is routed along the ground grid line of the frequency selection surface.
PCT/CN2023/080996 2022-05-24 2023-03-13 Frequency selective surface for antenna, and antenna system WO2023226528A1 (en)

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Publication number Priority date Publication date Assignee Title
CN114883809A (en) * 2022-05-24 2022-08-09 罗森伯格技术有限公司 Frequency selective surface for an antenna and antenna system

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US5917458A (en) * 1995-09-08 1999-06-29 The United States Of America As Represented By The Secretary Of The Navy Frequency selective surface integrated antenna system
CN106025570A (en) * 2016-06-28 2016-10-12 江苏赛博防务技术有限公司 Circular polarizer with beamforming function based on frequency selective surface
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CN113991304A (en) * 2021-09-15 2022-01-28 北京邮电大学 Antenna beam forming method based on super-surface array
CN113991301A (en) * 2021-10-18 2022-01-28 广东盛路通信科技股份有限公司 Frequency selection antenna housing and antenna
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US5917458A (en) * 1995-09-08 1999-06-29 The United States Of America As Represented By The Secretary Of The Navy Frequency selective surface integrated antenna system
CN106025570A (en) * 2016-06-28 2016-10-12 江苏赛博防务技术有限公司 Circular polarizer with beamforming function based on frequency selective surface
CN215418610U (en) * 2021-08-31 2022-01-04 康普技术有限责任公司 Frequency selective reflector and base station antenna
CN113782977A (en) * 2021-09-15 2021-12-10 西安电子科技大学 Multi-beam reflective array antenna based on super surface and manufacturing method thereof
CN113991304A (en) * 2021-09-15 2022-01-28 北京邮电大学 Antenna beam forming method based on super-surface array
CN113991301A (en) * 2021-10-18 2022-01-28 广东盛路通信科技股份有限公司 Frequency selection antenna housing and antenna
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